An update of the glibc package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access     memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS     module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing     the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the     call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and     AI_V4MAPPED as flags. (CVE-2023-4806)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7409 advisory.

    The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard     math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system.
    Without these libraries, the Linux system cannot function correctly.

    Security Fix(es):

    * glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)

    * glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

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

  - A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that     has been freed, resulting in an application crash. This issue is only exploitable when a NSS module     implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the
    _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the     call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and     AI_V4MAPPED as flags. (CVE-2023-4806)

  - A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been     freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is     called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.
    (CVE-2023-4813)

  - A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a     memory leak, which may result in an application crash. (CVE-2023-5156)

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 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-028062484e advisory.

    Security fix for CVE-2023-4911, CVE-2023-4806, and CVE-2023-4527.

    CVE-2023-4911: If a tunable of the form NAME=NAME=VAL is passed in the environment of a setuid program and     NAME is valid, it may result in a buffer overflow, which could be exploited to achieve escalated     privileges.  This flaw was introduced in glibc 2.34.

    CVE-2023-4806: When an NSS plugin only implements the _gethostbyname2_r and _getcanonname_r callbacks,     getaddrinfo could use memory that was freed during buffer resizing, potentially causing a crash or read or     write to arbitrary memory.

    CVE-2023-4527: If the system is configured in no-aaaa mode via /etc/resolv.conf, getaddrinfo is called for     the AF_UNSPEC address family, and a DNS response is received over TCP that is larger than 2048 bytes,     getaddrinfo may potentially disclose stack contents via the returned address data, or crash.



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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:5453 advisory.

    The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard     math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system.
    Without these libraries, the Linux system cannot function correctly.

    Security Fix(es):

    * glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911)

    * glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527)

    * glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)

    * glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

    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 versions of the glibc packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that     has been freed, resulting in an application crash. This issue is only exploitable when a NSS module     implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the
    _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the     call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and     AI_V4MAPPED as flags. (CVE-2023-4806)

  - A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been     freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is     called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.
    (CVE-2023-4813)

  - A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the     GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted     GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with     elevated privileges. (CVE-2023-4911)

  - A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a     memory leak, which may result in an application crash. (CVE-2023-5156)

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 version of AHV installed on the remote host is prior to 20230302.102005. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.100173 advisory.

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers     option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain     unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45234)

  - A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may     allow an authenticated client to cause a denial of service. (CVE-2023-1667)

  - A vulnerability was found in libssh, where the authentication check of the connecting client can be     bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen     if there is insufficient memory or the memory usage is limited. The problem is caused by the return value     `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call     `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the     cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
    (CVE-2023-2283)

  - A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange     differ from response times of ciphertexts with correct PKCS#1 v1.5 padding. (CVE-2023-5981)

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

The remote NewStart CGSL host, running version MAIN 7.02, has glibc packages installed that are affected by multiple vulnerabilities:

  - A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This     function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was     not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0])     is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue     affects glibc 2.36 and newer. (CVE-2023-6246)

  - A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and     the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048     bytes can potentially disclose stack contents through the function returned address data, and may cause a     crash. (CVE-2023-4527)

  - A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that     has been freed, resulting in an application crash. This issue is only exploitable when a NSS module     implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the
    _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the     call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and     AI_V4MAPPED as flags. (CVE-2023-4806)

  - A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the     GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted     GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with     elevated privileges. (CVE-2023-4911)

  - A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a     memory leak, which may result in an application crash. (CVE-2023-5156)

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

A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and
_nss_*_getcanonname_r hooks without implementing the
_nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
204496	Photon OS 5.0: Glibc PHSA-2023-5.0-0107	Nessus	PhotonOS Local Security Checks	2024/7/24	2024/7/24	medium
227161	Linux Distros Unpatched Vulnerability : CVE-2023-4806	Nessus	Misc.	2025/3/5	2025/9/30	medium
186045	RHEL 8 : glibc (RHSA-2023:7409)	Nessus	Red Hat Local Security Checks	2023/11/21	2024/11/7	medium
188941	EulerOS Virtualization 2.9.0 : glibc (EulerOS-SA-2024-1008)	Nessus	Huawei Local Security Checks	2024/1/16	2024/1/16	high
188950	EulerOS Virtualization 2.9.1 : glibc (EulerOS-SA-2024-1034)	Nessus	Huawei Local Security Checks	2024/1/16	2024/1/16	high
182544	Fedora 37 : glibc (2023-028062484e)	Nessus	Fedora Local Security Checks	2023/10/4	2024/11/14	high
182601	RHEL 9 : glibc (RHSA-2023:5453)	Nessus	Red Hat Local Security Checks	2023/10/5	2024/11/7	high
188881	EulerOS 2.0 SP11 : glibc (EulerOS-SA-2023-3269)	Nessus	Huawei Local Security Checks	2024/1/16	2024/1/29	high
206823	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.100173)	Nessus	Misc.	2024/9/9	2025/2/17	low
242700	NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2025-0171)	Nessus	NewStart CGSL Local Security Checks	2025/7/25	2025/7/25	high
503946	Siemens SIMATIC S7-1500 Use After Free (CVE-2023-4806)	Tenable OT Security	Tenable.ot	2025/11/13	2025/11/13	medium

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