The remote SUSE Linux SLED15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0176-1 advisory.

  - ** DISPUTED ** Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a     successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider     this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from     the community that facilitates automatic configuration creation. It is not part of the Unbound     installation. (CVE-2019-25031)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via     regional_alloc. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25032)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP     macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25033)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading     to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may     be vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25034)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The     vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25035)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25036)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy     via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25037)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in     dnscrypt/dnscrypt.c. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25038)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25039)

  - ** DISPUTED ** Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE:
    The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25040)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25041)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25042)

  - NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version     4.3.3, contain a local vulnerability that would allow for a local symlink attack. When writing the PID     file, Unbound and NSD create the file if it is not there, or open an existing file for writing. In case     the file was already present, they would follow symlinks if the file happened to be a symlink instead of a     regular file. An additional chown of the file would then take place after it was written, making the user     Unbound/NSD is supposed to run as the new owner of the file. If an attacker has local access to the user     Unbound/NSD runs as, she could create a symlink in place of the PID file pointing to a file that she would     like to erase. If then Unbound/NSD is killed and the PID file is not cleared, upon restarting with root     privileges, Unbound/NSD will rewrite any file pointed at by the symlink. This is a local vulnerability     that could create a Denial of Service of the system Unbound/NSD is running on. It requires an attacker     having access to the limited permission user Unbound/NSD runs as and point through the symlink to a     critical file on the system. (CVE-2020-28935)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2022:0176-1 advisory.

  - ** DISPUTED ** Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a     successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider     this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from     the community that facilitates automatic configuration creation. It is not part of the Unbound     installation. (CVE-2019-25031)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via     regional_alloc. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25032)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP     macro. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a     running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25033)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading     to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may     be vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25034)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The     vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25035)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25036)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy     via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25037)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in     dnscrypt/dnscrypt.c. NOTE: The vendor disputes that this is a vulnerability. Although the code may be     vulnerable, a running Unbound installation cannot be remotely or locally exploited. (CVE-2019-25038)

  - ** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25039)

  - ** DISPUTED ** Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE:
    The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25040)

  - ** DISPUTED ** Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25041)

  - ** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy.
    NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running     Unbound installation cannot be remotely or locally exploited. (CVE-2019-25042)

  - NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version     4.3.3, contain a local vulnerability that would allow for a local symlink attack. When writing the PID     file, Unbound and NSD create the file if it is not there, or open an existing file for writing. In case     the file was already present, they would follow symlinks if the file happened to be a symlink instead of a     regular file. An additional chown of the file would then take place after it was written, making the user     Unbound/NSD is supposed to run as the new owner of the file. If an attacker has local access to the user     Unbound/NSD runs as, she could create a symlink in place of the PID file pointing to a file that she would     like to erase. If then Unbound/NSD is killed and the PID file is not cleared, upon restarting with root     privileges, Unbound/NSD will rewrite any file pointed at by the symlink. This is a local vulnerability     that could create a Denial of Service of the system Unbound/NSD is running on. It requires an attacker     having access to the limited permission user Unbound/NSD runs as and point through the symlink to a     critical file on the system. (CVE-2020-28935)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the unbound package has been released.

According to the version of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - NLnet Labs Unbound, up to and including version 1.12.0,     and NLnet Labs NSD, up to and including version 4.3.3,     contain a local vulnerability that would allow for a     local symlink attack. When writing the PID file,     Unbound and NSD create the file if it is not there, or     open an existing file for writing. In case the file was     already present, they would follow symlinks if the file     happened to be a symlink instead of a regular file. An     additional chown of the file would then take place     after it was written, making the user Unbound/NSD is     supposed to run as the new owner of the file. If an     attacker has local access to the user Unbound/NSD runs     as, she could create a symlink in place of the PID file     pointing to a file that she would like to erase. If     then Unbound/NSD is killed and the PID file is not     cleared, upon restarting with root privileges,     Unbound/NSD will rewrite any file pointed at by the     symlink. This is a local vulnerability that could     create a Denial of Service of the system Unbound/NSD is     running on. It requires an attacker having access to     the limited permission user Unbound/NSD runs as and     point through the symlink to a critical file on the     system.(CVE-2020-28935)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the unbound package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - NLnet Labs Unbound, up to and including version 1.12.0,     and NLnet Labs NSD, up to and including version 4.3.3,     contain a local vulnerability that would allow for a     local symlink attack. When writing the PID file,     Unbound and NSD create the file if it is not there, or     open an existing file for writing. In case the file was     already present, they would follow symlinks if the file     happened to be a symlink instead of a regular file. An     additional chown of the file would then take place     after it was written, making the user Unbound/NSD is     supposed to run as the new owner of the file. If an     attacker has local access to the user Unbound/NSD runs     as, she could create a symlink in place of the PID file     pointing to a file that she would like to erase. If     then Unbound/NSD is killed and the PID file is not     cleared, upon restarting with root privileges,     Unbound/NSD will rewrite any file pointed at by the     symlink. This is a local vulnerability that could     create a Denial of Service of the system Unbound/NSD is     running on. It requires an attacker having access to     the limited permission user Unbound/NSD runs as and     point through the symlink to a critical file on the     system.(CVE-2020-28935)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several security vulnerabilities have been corrected in unbound, a validating, recursive, caching DNS resolver. Support for the unbound DNS server has been resumed, the sources can be found in the unbound1.9 source package.

CVE-2020-12662

Unbound has Insufficient Control of Network Message Volume, aka an 'NXNSAttack' issue. This is triggered by random subdomains in the NSDNAME in NS records.

CVE-2020-12663

Unbound has an infinite loop via malformed DNS answers received from upstream servers.

CVE-2020-28935

Unbound contains a local vulnerability that would allow for a local symlink attack. When writing the PID file Unbound creates the file if it is not there, or opens an existing file for writing. In case the file was already present, it would follow symlinks if the file happened to be a symlink instead of a regular file. 

For Debian 9 stretch, these problems have been fixed in version 1.9.0-2+deb10u2~deb9u1.

We recommend that you upgrade your unbound1.9 packages.

For the detailed security status of unbound1.9 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/unbound1.9

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:0632 advisory.

    The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

    Security Fix(es):

    * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)

    * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)

    * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)

    * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)

    * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet     (CVE-2019-25037)

    * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)

    * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)

    * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)

    * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)

    * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)

    * unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the unbound package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability :

  - NLnet Labs Unbound, up to and including version 1.12.0,     and NLnet Labs NSD, up to and including version 4.3.3,     contain a local vulnerability that would allow for a     local symlink attack. When writing the PID file,     Unbound and NSD create the file if it is not there, or     open an existing file for writing. In case the file was     already present, they would follow symlinks if the file     happened to be a symlink instead of a regular file. An     additional chown of the file would then take place     after it was written, making the user Unbound/NSD is     supposed to run as the new owner of the file. If an     attacker has local access to the user Unbound/NSD runs     as, she could create a symlink in place of the PID file     pointing to a file that she would like to erase. If     then Unbound/NSD is killed and the PID file is not     cleared, upon restarting with root privileges,     Unbound/NSD will rewrite any file pointed at by the     symlink. This is a local vulnerability that could     create a Denial of Service of the system Unbound/NSD is     running on. It requires an attacker having access to     the limited permission user Unbound/NSD runs as and     point through the symlink to a critical file on the     system.(CVE-2020-28935)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3371 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3371-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     March 29, 2023                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : unbound     Version        : 1.9.0-2+deb10u3     CVE ID         : CVE-2020-28935 CVE-2022-3204 CVE-2022-30698 CVE-2022-30699     Debian Bug     : 1016493 977165

    Several security vulnerabilities have been discovered in unbound, a validating,     recursive, caching DNS resolver.

    CVE-2022-3204

     A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation      Attack) has been discovered in various DNS resolving software. The      NRDelegation Attack works by having a malicious delegation with a      considerable number of non responsive nameservers. The attack starts by      querying a resolver for a record that relies on those unresponsive      nameservers. The attack can cause a resolver to spend a lot of      time/resources resolving records under a malicious delegation point where a      considerable number of unresponsive NS records reside. It can trigger high      CPU usage in some resolver implementations that continually look in the      cache for resolved NS records in that delegation. This can lead to degraded      performance and eventually denial of service in orchestrated attacks.
     Unbound does not suffer from high CPU usage, but resources are still needed      for resolving the malicious delegation. Unbound will keep trying to resolve      the record until hard limits are reached. Based on the nature of the attack      and the replies, different limits could be reached. From now on Unbound      introduces fixes for better performance when under load, by cutting      opportunistic queries for nameserver discovery and DNSKEY prefetching and      limiting the number of times a delegation point can issue a cache lookup      for missing records.

    CVE-2022-30698 and CVE-2022-30699

     Unbound is vulnerable to a novel type of the ghost domain names attack.
     The vulnerability works by targeting an Unbound instance.
     Unbound is queried for a rogue domain name when the cached delegation      information is about to expire. The rogue nameserver delays the response so      that the cached delegation information is expired. Upon receiving the      delayed answer containing the delegation information, Unbound overwrites      the now expired entries. This action can be repeated when the delegation      information is about to expire making the rogue delegation information      ever-updating. From now on Unbound stores the start time for a query and      uses that to decide if the cached delegation information can be      overwritten.

    CVE-2020-28935

     Unbound contains a local vulnerability that would allow for a local symlink      attack.

    For Debian 10 buster, these problems have been fixed in version     1.9.0-2+deb10u3.

    We recommend that you upgrade your unbound packages.

    For the detailed security status of unbound please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/unbound

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202101-38 (NSD: Symbolic link traversal)

    A local vulnerability was discovered that would allow for a local       symlink attack due to how NSD handles PID files.
  Impact :

    A local attacker could cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

According to the versions of the unbound packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - NLnet Labs Unbound, up to and including version 1.12.0,     and NLnet Labs NSD, up to and including version 4.3.3,     contain a local vulnerability that would allow for a     local symlink attack. When writing the PID file,     Unbound and NSD create the file if it is not there, or     open an existing file for writing. In case the file was     already present, they would follow symlinks if the file     happened to be a symlink instead of a regular file. An     additional chown of the file would then take place     after it was written, making the user Unbound/NSD is     supposed to run as the new owner of the file. If an     attacker has local access to the user Unbound/NSD runs     as, she could create a symlink in place of the PID file     pointing to a file that she would like to erase. If     then Unbound/NSD is killed and the PID file is not     cleared, upon restarting with root privileges,     Unbound/NSD will rewrite any file pointed at by the     symlink. This is a local vulnerability that could     create a Denial of Service of the system Unbound/NSD is     running on. It requires an attacker having access to     the limited permission user Unbound/NSD runs as and     point through the symlink to a critical file on the     system.(CVE-2020-28935)

  - Unbound before 1.9.4 accesses uninitialized memory,     which allows remote attackers to trigger a crash via a     crafted NOTIFY query. The source IP address of the     query must match an access-control     rule.(CVE-2019-16866)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1853 advisory.

    The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

    Security Fix(es):

    * unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)

    * unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)

    * unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)

    * unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)

    * unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet     (CVE-2019-25037)

    * unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)

    * unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)

    * unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)

    * unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)

    * unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)

    * unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:1853 advisory.

  - unbound: integer overflow in the regional allocator via regional_alloc (CVE-2019-25032)

  - unbound: integer overflow in sldns_str2wire_dname_buf_origin can lead to an out-of-bounds write     (CVE-2019-25034)

  - unbound: out-of-bounds write in sldns_bget_token_par (CVE-2019-25035)

  - unbound: assertion failure and denial of service in synth_cname (CVE-2019-25036)

  - unbound: assertion failure and denial of service in dname_pkt_copy via an invalid packet (CVE-2019-25037)

  - unbound: integer overflow in a size calculation in dnscrypt/dnscrypt.c (CVE-2019-25038)

  - unbound: integer overflow in a size calculation in respip/respip.c (CVE-2019-25039)

  - unbound: infinite loop via a compressed name in dname_pkt_copy (CVE-2019-25040)

  - unbound: assertion failure via a compressed name in dname_pkt_copy (CVE-2019-25041)

  - unbound: out-of-bounds write via a compressed name in rdata_copy (CVE-2019-25042)

  - unbound: symbolic link traversal when writing PID file (CVE-2020-28935)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of unbound installed on the remote host is prior to 1.7.3-15. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1683 advisory.

    2024-01-19: CVE-2019-25033 was added to this advisory.

    A flaw was found in unbound. An integer overflow in regional_alloc function may lead to a buffer overflow     of the allocated buffer if the size can be controlled by an attacker and can be big enough. The highest     threat from this vulnerability is to data confidentiality and integrity as well as service availability.
    (CVE-2019-25032)

    Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE:
    The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound     installation cannot be remotely or locally exploited. (CVE-2019-25033)

    A flaw was found in unbound. An integer overflow in the sldns_str2wire_dname_buf_origin function may lead     to a buffer overflow. The highest threat from this vulnerability is to data confidentiality and integrity     as well as service availability. (CVE-2019-25034)

    A flaw was found in unbound. An out-of-bounds write in the sldns_bget_token_par function may be abused by     a remote attacker. The highest threat from this vulnerability is to data confidentiality and integrity as     well as service availability. (CVE-2019-25035)

    A flaw was found in unbound. A reachable assertion in the synth_cname function can be triggered by sending     invalid packets to the server. If asserts are disabled during compilation, this issue might lead to an     out-of-bounds write in dname_pkt_copy function. The highest threat from this vulnerability is to data     confidentiality and integrity as well as service availability. (CVE-2019-25036)

    A flaw was found in unbound. A reachable assertion in the dname_pkt_copy function can be triggered by     sending invalid packets to the server. The highest threat from this vulnerability is to service     availability. (CVE-2019-25037)

    A flaw was found in unbound. An integer overflow in dnsc_load_local_data function may lead to a buffer     overflow of the allocated buffer if the size can be controlled by an attacker. The highest threat from     this vulnerability is to data confidentiality and integrity as well as service availability.
    (CVE-2019-25038)

    A flaw was found in unbound. An integer overflow in ub_packed_rrset_key function may lead to a buffer     overflow of the allocated buffer if the size can be controlled by an attacker. The highest threat from     this vulnerability is to data confidentiality and integrity as well as service availability.
    (CVE-2019-25039)

    A flaw was found in unbound. An infinite loop in dname_pkt_copy function could be triggered by a remote     attacker. The highest threat from this vulnerability is to service availability. (CVE-2019-25040)

    A flaw was found in unbound. A reachable assertion in the dname_pkt_copy function can be triggered through     compressed names. The highest threat from this vulnerability is to service availability. (CVE-2019-25041)

    A flaw was found in unbound. An out-of-bounds write in the rdata_copy function may be abused by a remote     attacker. The highest threat from this vulnerability is to data confidentiality and integrity as well as     service availability. (CVE-2019-25042)

    A symbolic link traversal vulnerability was found in unbound in the way it writes its PID file while     starting up. This flaw allows a local attacker with access to the unbound user to set up a link to another     file, owned by root, and make unbound overwrite it during its next restart, destroying the original     content. The highest threat from this vulnerability is integrity. (CVE-2020-28935)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
157078	SUSE SLED15 / SLES15 Security Update : unbound (SUSE-SU-2022:0176-1)	Nessus	SuSE Local Security Checks	2022/1/26	2023/7/14	critical
157088	openSUSE 15 Security Update : unbound (openSUSE-SU-2022:0176-1)	Nessus	SuSE Local Security Checks	2022/1/26	2022/1/26	critical
146778	Photon OS 3.0: Unbound PHSA-2021-3.0-0197	Nessus	PhotonOS Local Security Checks	2021/2/23	2025/8/22	medium
146862	Photon OS 1.0: Unbound PHSA-2021-1.0-0362	Nessus	PhotonOS Local Security Checks	2021/2/25	2021/2/26	medium
144659	EulerOS 2.0 SP9 : unbound (EulerOS-SA-2021-1037)	Nessus	Huawei Local Security Checks	2021/1/4	2024/1/31	medium
145740	EulerOS 2.0 SP8 : unbound (EulerOS-SA-2021-1176)	Nessus	Huawei Local Security Checks	2021/2/1	2024/1/25	medium
147520	EulerOS Virtualization 3.0.2.6 : unbound (EulerOS-SA-2021-1426)	Nessus	Huawei Local Security Checks	2021/3/10	2024/1/11	medium
146527	Debian DLA-2556-1 : unbound1.9 security update	Nessus	Debian Local Security Checks	2021/2/16	2024/1/22	high
158321	RHEL 8 : unbound (RHSA-2022:0632)	Nessus	Red Hat Local Security Checks	2022/2/23	2024/11/7	critical
147099	EulerOS Virtualization for ARM 64 3.0.6.0 : unbound (EulerOS-SA-2021-1579)	Nessus	Huawei Local Security Checks	2021/3/4	2024/1/16	medium
214466	Debian dla-3371 : libunbound-dev - security update	Nessus	Debian Local Security Checks	2025/1/22	2025/1/22	medium
146770	Photon OS 2.0: Unbound PHSA-2021-2.0-0320	Nessus	PhotonOS Local Security Checks	2021/2/23	2024/7/23	medium
147596	EulerOS Virtualization for ARM 64 3.0.2.0 : unbound (EulerOS-SA-2021-1401)	Nessus	Huawei Local Security Checks	2021/3/10	2024/1/10	medium
145564	GLSA-202101-38 : NSD: Symbolic link traversal	Nessus	Gentoo Local Security Checks	2021/1/29	2024/1/25	medium
147617	EulerOS Virtualization 2.9.1 : unbound (EulerOS-SA-2021-1629)	Nessus	Huawei Local Security Checks	2021/3/10	2024/1/10	high
149675	RHEL 8 : unbound (RHSA-2021:1853)	Nessus	Red Hat Local Security Checks	2021/5/19	2024/11/7	critical
149745	CentOS 8 : unbound (CESA-2021:1853)	Nessus	CentOS Local Security Checks	2021/5/19	2021/6/2	critical
151275	Amazon Linux 2 : unbound (ALAS-2021-1683)	Nessus	Amazon Linux Local Security Checks	2021/7/1	2024/12/11	critical

检测

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