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 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.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2021-2060:02 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)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4938-1 advisory.

    It was discovered that Unbound contained multiple security issues. A remote attacker could possibly use     these issues to cause a denial of service, inject arbitrary commands, execute arbitrary code, and     overwrite local files.

Tenable has extracted the preceding description block directly from the Ubuntu 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 versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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.(CVE-2019-25031)

  - Unbound before 1.9.5 allows an integer overflow in the     regional allocator via regional_alloc.(CVE-2019-25032)

  - Unbound before 1.9.5 allows an integer overflow in the     regional allocator via the ALIGN_UP     macro.(CVE-2019-25033)

  - Unbound before 1.9.5 allows an integer overflow in     sldns_str2wire_dname_buf_origin, leading to an     out-of-bounds write.(CVE-2019-25034)

  - Unbound before 1.9.5 allows an out-of-bounds write in     sldns_bget_token_par.(CVE-2019-25035)

  - Unbound before 1.9.5 allows an assertion failure and     denial of service in synth_cname.(CVE-2019-25036)

  - Unbound before 1.9.5 allows an assertion failure and     denial of service in dname_pkt_copy via an invalid     packet.(CVE-2019-25037)

  - Unbound before 1.9.5 allows an integer overflow in a     size calculation in     dnscrypt/dnscrypt.c.(CVE-2019-25038)

  - Unbound before 1.9.5 allows an integer overflow in a     size calculation in respip/respip.c.(CVE-2019-25039)

  - Unbound before 1.9.5 allows an infinite loop via a     compressed name in dname_pkt_copy.(CVE-2019-25040)

  - Unbound before 1.9.5 allows an assertion failure via a     compressed name in dname_pkt_copy.(CVE-2019-25041)

  - Unbound before 1.9.5 allows an out-of-bounds write via     a compressed name in rdata_copy.(CVE-2019-25042)

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 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.

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

  - ** 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)

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 Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:1853 advisory.

  - ** 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 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.

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
158321	RHEL 8 : unbound (RHSA-2022:0632)	Nessus	Red Hat Local Security Checks	2022/2/23	2024/11/7	critical
294526	MiracleLinux 8 : unbound-1.7.3-15.el8 (AXSA:2021-2060:02)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	critical
149324	Ubuntu 18.04 LTS / 20.04 LTS : Unbound vulnerabilities (USN-4938-1)	Nessus	Ubuntu Local Security Checks	2021/5/6	2024/8/27	critical
152284	EulerOS 2.0 SP9 : unbound (EulerOS-SA-2021-2259)	Nessus	Huawei Local Security Checks	2021/8/9	2023/12/6	critical
157088	openSUSE 15 Security Update : unbound (openSUSE-SU-2022:0176-1)	Nessus	SuSE Local Security Checks	2022/1/26	2022/1/26	critical
158024	EulerOS Virtualization 3.0.6.0 : unbound (EulerOS-SA-2022-1100)	Nessus	Huawei Local Security Checks	2022/2/13	2022/2/13	critical
158030	EulerOS Virtualization 3.0.6.6 : unbound (EulerOS-SA-2022-1150)	Nessus	Huawei Local Security Checks	2022/2/13	2022/2/13	critical
184575	Rocky Linux 8 : unbound (RLSA-2021:1853)	Nessus	Rocky Linux Local Security Checks	2023/11/6	2023/11/6	critical

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