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

  - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function     option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However,     there is not a corresponding call to option_dereference() to decrement the refcount field. The function     add_option() is only used in server responses to lease query packets. Each lease query response calls this     function for several options, so eventually, the reference counters could overflow and cause the server to     abort. (CVE-2022-2928)

  - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server,     sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the     server to run out of memory. (CVE-2022-2929)

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 Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-5c58ef733f advisory.

    Automatic update for dhcp-4.4.3-4.P1.fc38.

    ##### **Changelog**

    ```
    * Wed Oct  5 2022 Martin Osvald <mosvald@redhat.com> - 12:4.4.3-4.P1
    - New version 4.4.3-P1 (rhbz#2132240)
    - Fix for CVE-2022-2928 (rhbz#2132429)
    - Fix for CVE-2022-2929 (rhbz#2132430)

    ```

Tenable has extracted the preceding description block directly from the Fedora 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 dhcp package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function     option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However,     there is not a corresponding call to option_dereference() to decrement the refcount field. The function     add_option() is only used in server responses to lease query packets. Each lease query response calls this     function for several options, so eventually, the reference counters could overflow and cause the server to     abort. (CVE-2022-2928)

  - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server,     sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the     server to run out of memory. (CVE-2022-2929)

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 host is affected by the vulnerability described in GLSA-202305-22 (ISC DHCP: Multiple Vulnerabilities)

  - In ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16, ISC DHCP 4.4.0 -> 4.4.2 (Other branches of ISC DHCP (i.e., releases     in the 4.0.x series or lower and releases in the 4.3.x series) are beyond their End-of-Life (EOL) and no     longer supported by ISC. From inspection it is clear that the defect is also present in releases from     those series, but they have not been officially tested for the vulnerability), The outcome of encountering     the defect while reading a lease that will trigger it varies, according to: the component being affected     (i.e., dhclient or dhcpd) whether the package was built as a 32-bit or 64-bit binary whether the compiler     flag -fstack-protection-strong was used when compiling In dhclient, ISC has not successfully reproduced     the error on a 64-bit system. However, on a 32-bit system it is possible to cause dhclient to crash when     reading an improper lease, which could cause network connectivity problems for an affected system due to     the absence of a running DHCP client process. In dhcpd, when run in DHCPv4 or DHCPv6 mode: if the dhcpd     server binary was built for a 32-bit architecture AND the -fstack-protection-strong flag was specified to     the compiler, dhcpd may exit while parsing a lease file containing an objectionable lease, resulting in     lack of service to clients. Additionally, the offending lease and the lease immediately following it in     the lease database may be improperly deleted. if the dhcpd server binary was built for a 64-bit     architecture OR if the -fstack-protection-strong compiler flag was NOT specified, the crash will not     occur, but it is possible for the offending lease and the lease which immediately followed it to be     improperly deleted. (CVE-2021-25217)

  - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function     option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However,     there is not a corresponding call to option_dereference() to decrement the refcount field. The function     add_option() is only used in server responses to lease query packets. Each lease query response calls this     function for several options, so eventually, the reference counters could overflow and cause the server to     abort. (CVE-2022-2928)

  - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server,     sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the     server to run out of memory. (CVE-2022-2929)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:2502 advisory.

    The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP     network to get their own network configuration information, including an IP address, a subnet mask, and a     broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and     administer DHCP on a network.

    Security Fix(es):

    * dhcp: option refcount overflow when leasequery is enabled leading to dhcpd abort (CVE-2022-2928)

    * dhcp: DHCP memory leak (CVE-2022-2929)

    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 9.2 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.

According to the versions of the dhcp package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and     9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11     of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR     triggering the flaw described above, the named process will terminate due to a failed assertion the next     time the transferred secondary zone is refreshed. (CVE-2021-25214)

  - In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 ->     9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND     9.17 development branch, when a vulnerable version of named receives a query for a record triggering the     flaw described above, the named process will terminate due to a failed assertion check. The vulnerability     affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other     versions of BIND 9. (CVE-2021-25215)

  - In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 ->     9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND     9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing     can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it     possible for its internal data structures to grow almost infinitely, which may cause significant delays in     client query processing. (CVE-2021-25219)

  - BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 ->     9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including     Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL.
    The cache could become poisoned with incorrect records leading to queries being made to the wrong servers,     which might also result in false information being returned to clients. (CVE-2021-25220)

  - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function     option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However,     there is not a corresponding call to option_dereference() to decrement the refcount field. The function     add_option() is only used in server responses to lease query packets. Each lease query response calls this     function for several options, so eventually, the reference counters could overflow and cause the server to     abort. (CVE-2022-2928)

  - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server,     sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the     server to run out of memory. (CVE-2022-2929)

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-3146 advisory.

    - -----------------------------------------------------------------------     Debian LTS Advisory DLA-3146-1              debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Utkarsh Gupta     October 11, 2022                            https://wiki.debian.org/LTS
    - -----------------------------------------------------------------------

    Package        : isc-dhcp     Version        : 4.4.1-2+deb10u2     CVE ID         : CVE-2022-2928 CVE-2022-2929     Debian Bug     : 1021320

    Several vulnerabilities have been discovered in the ISC DHCP client,     relay and server.

    CVE-2022-2928

        It was discovered that the DHCP server does not correctly perform         option reference counting when configured with allow leasequery;.
        A remote attacker can take advantage of this flaw to cause a denial         of service (daemon crash).

    CVE-2022-2929

        It was discovered that the DHCP server is prone to a memory leak         flaw when handling contents of option 81 (fqdn) data received in         a DHCP packet. A remote attacker can take advantage of this flaw         to cause DHCP servers to consume resources, resulting in denial         of service.

    For Debian 10 buster, these problems have been fixed in version     4.4.1-2+deb10u2.

    We recommend that you upgrade your isc-dhcp packages.

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

    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

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 Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5658-2 advisory.

    USN-5658-1 fixed vulnerabilities in DHCP. This update provides the corresponding updates for Ubuntu 16.04     ESM.



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.

The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dhcp-4.4.2-18.b1.el9 build changelog.

  - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function     option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However,     there is not a corresponding call to option_dereference() to decrement the refcount field. The function     add_option() is only used in server responses to lease query packets. Each lease query response calls this     function for several options, so eventually, the reference counters could overflow and cause the server to     abort. (CVE-2022-2928)

  - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server,     sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the     server to run out of memory. (CVE-2022-2929)

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

An update of the dhcp package has been released.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
178868	EulerOS Virtualization 3.0.6.6 : dhcp (EulerOS-SA-2023-2409)	Nessus	Huawei Local Security Checks	2023/7/26	2023/7/26	medium
211227	Fedora 38 : dhcp (2022-5c58ef733f)	Nessus	Fedora Local Security Checks	2024/11/14	2024/11/14	medium
174849	EulerOS Virtualization 2.9.1 : dhcp (EulerOS-SA-2023-1622)	Nessus	Huawei Local Security Checks	2023/4/27	2023/4/27	medium
175059	GLSA-202305-22 : ISC DHCP: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	2023/5/3	2024/11/26	medium
175469	RHEL 9 : dhcp (RHSA-2023:2502)	Nessus	Red Hat Local Security Checks	2023/5/13	2024/11/7	medium
168992	EulerOS 2.0 SP10 : dhcp (EulerOS-SA-2022-2842)	Nessus	Huawei Local Security Checks	2022/12/21	2022/12/21	medium
166004	Debian dla-3146 : isc-dhcp-client - security update	Nessus	Debian Local Security Checks	2022/10/11	2025/1/22	medium
167065	Ubuntu 16.04 ESM : DHCP vulnerabilities (USN-5658-2)	Nessus	Ubuntu Local Security Checks	2022/11/8	2024/10/29	medium
191202	CentOS 9 : dhcp-4.4.2-18.b1.el9	Nessus	CentOS Local Security Checks	2024/2/29	2024/4/26	medium
332530	Photon OS 5.0: Dhcp PHSA-2023-5.0-91-0100	Nessus	PhotonOS Local Security Checks	2026/8/5	2026/8/5	medium

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