According to the versions of the dhcp package installed, the EulerOS Virtualization 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)

  - By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the     resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
    (CVE-2022-2795)

  - 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)

  - By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38177)

  - By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can     trigger a small memory leak. It is possible to gradually erode available memory to the point where named     crashes for lack of resources. (CVE-2022-38178)

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.

An update of the dhcp package has been released.

The remote NewStart CGSL host, running version MAIN 6.02, has dhcp packages installed that are affected by multiple vulnerabilities:

  - An integer overflow vulnerability was found in the DHCP server. When the option_code_hash_lookup()     function 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 add_option()     function is only used in server responses to lease query packets. Each lease query response calls this     function for several options. Hence, a DHCP server configured with allow lease query, a remote machine     with access to the server, can send lease queries for the same lease multiple times, leading to the     add_option() function being called repeatedly. This issue could cause the reference counters to overflow     and the server to abort or crash. (CVE-2022-2928)

  - A vulnerability was found in the DHCP server where the fqdn_universe_decode() function allocates buffer     space for the contents of option 81 (fqdn) data received in a DHCP packet. The maximum length of a DNS     label is 63 bytes. The function tests the length byte of each label contained in the fqdn; if it finds     a label whose length byte value is larger than 63, it returns without dereferencing the buffer space. This     issue causes a memory leak. On a system with access to a DHCP server, an attacker from any adjacent     network could send DHCP packets crafted to include fqdn labels longer than 63 bytes to the DHCP server,     eventually causing the server to run out of memory and crash. (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 Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-9ca9a94e28 advisory.

    - 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.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2023:0058 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2022-2928:
    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-2022-2929:
    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.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
176868	EulerOS Virtualization 2.11.0 : dhcp (EulerOS-SA-2023-2087)	Nessus	Huawei Local Security Checks	2023/6/7	2023/6/7	medium
203518	Photon OS 5.0: Dhcp PHSA-2023-5.0-0100	Nessus	PhotonOS Local Security Checks	2024/7/23	2024/7/23	medium
206857	NewStart CGSL MAIN 6.02 : dhcp Multiple Vulnerabilities (NS-SA-2024-0061)	Nessus	NewStart CGSL Local Security Checks	2024/9/10	2024/9/10	medium
211355	Fedora 37 : dhcp (2022-9ca9a94e28)	Nessus	Fedora Local Security Checks	2024/11/14	2024/11/14	medium
236136	Alibaba Cloud Linux 3 : 0058: dhcp (ALINUX3-SA-2023:0058)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	medium

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