CVE-2023-4911 · netVigilance record NV23-0174

GNU C Library Buffer Overflow

past due

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA deadline 2023-12-12 · passed 2 years 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

Who is affected

GNU GNU C Library. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-122.

Timeline

2023-11-21
Added to CISA KEVExploitation in the wild confirmed by CISA
2023-12-12
CISA remediation deadlinepassed 2 years 8 months ago

Sources

NVD entry for CVE-2023-4911 nvd.nist.gov/vuln/detail/CVE-2023-4911
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
sourceware.org sourceware.org/git/?p=glibc.git
access.redhat.com access.redhat.com/security/cve/cve-2023-4911
debian.org www.debian.org/security/2023/dsa-5514
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2023-4911