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.

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

  - 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 relies on the presence of the package as reported by the vendor.

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.

The version of glibc installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-5156 advisory.

  - 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 this issue but has instead relied only on the application's self-reported version number.

An update of the glibc package has been released.

The version of glibc installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-5156 advisory.

  - 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 this issue 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.

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 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.

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 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 host is affected by the vulnerability described in GLSA-202402-01 (glibc: Multiple Vulnerabilities)

  - 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)

  - 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)

  - An off-by-one 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 these     functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the     buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and     newer. (CVE-2023-6779)

  - An integer 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 these functions are called with a very     long message, leading to an incorrect calculation of the buffer size to store the message, resulting in     undefined behavior. This issue affects glibc 2.37 and newer. (CVE-2023-6780)

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 remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6541-1 advisory.

    It was discovered that the GNU C Library was not properly handling certain memory operations. An attacker     could possibly use this issue to cause a denial of service (application crash). (CVE-2023-4806,     CVE-2023-4813)

    It was discovered that the GNU C library was not properly implementing a fix for CVE-2023-4806 in certain     cases, which could lead to a memory leak. An attacker could possibly use this issue to cause a denial of     service (application crash). This issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-5156)

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.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2023-407 advisory.

    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)

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

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

ID	Name	Product	Family	Severity
244331	Linux Distros Unpatched Vulnerability : CVE-2023-5156	Nessus	Misc.	high
242700	NewStart CGSL MAIN 7.02 : glibc Multiple Vulnerabilities (NS-SA-2025-0171)	Nessus	NewStart CGSL Local Security Checks	high
215876	Azure Linux 3.0 Security Update: glibc (CVE-2023-5156)	Nessus	Azure Linux Local Security Checks	high
204291	Photon OS 5.0: Glibc PHSA-2023-5.0-0110	Nessus	PhotonOS Local Security Checks	critical
204221	Photon OS 4.0: Glibc PHSA-2023-4.0-0535	Nessus	PhotonOS Local Security Checks	high
201888	CBL Mariner 2.0 Security Update: glibc (CVE-2023-5156)	Nessus	MarinerOS Local Security Checks	critical
197247	EulerOS Virtualization 3.0.6.0 : glibc (EulerOS-SA-2024-1682)	Nessus	Huawei Local Security Checks	high
192385	EulerOS Virtualization 2.11.0 : glibc (EulerOS-SA-2024-1426)	Nessus	Huawei Local Security Checks	high
192379	EulerOS Virtualization 2.11.1 : glibc (EulerOS-SA-2024-1398)	Nessus	Huawei Local Security Checks	high
191876	EulerOS 2.0 SP8 : glibc (EulerOS-SA-2024-1268)	Nessus	Huawei Local Security Checks	high
189928	GLSA-202402-01 : glibc: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
189020	EulerOS 2.0 SP9 : glibc (EulerOS-SA-2023-3330)	Nessus	Huawei Local Security Checks	high
188950	EulerOS Virtualization 2.9.1 : glibc (EulerOS-SA-2024-1034)	Nessus	Huawei Local Security Checks	high
188941	EulerOS Virtualization 2.9.0 : glibc (EulerOS-SA-2024-1008)	Nessus	Huawei Local Security Checks	high
188903	EulerOS 2.0 SP11 : glibc (EulerOS-SA-2023-3241)	Nessus	Huawei Local Security Checks	high
188891	EulerOS 2.0 SP9 : glibc (EulerOS-SA-2023-3298)	Nessus	Huawei Local Security Checks	high
188881	EulerOS 2.0 SP11 : glibc (EulerOS-SA-2023-3269)	Nessus	Huawei Local Security Checks	high
186676	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS / 23.04 : GNU C Library vulnerabilities (USN-6541-1)	Nessus	Ubuntu Local Security Checks	high
184432	Amazon Linux 2023 : compat-libpthread-nonshared, glibc, glibc-all-langpacks (ALAS2023-2023-407)	Nessus	Amazon Linux Local Security Checks	critical

Detections

Analytics

CVE-2023-5156

high

Tenable Plugins

high

high

high

critical

high

critical

high

high

high

high

high

high

high

high

high

high

high

high

critical