Risk Letters

Exploited vulnerability

CVE-2023-4911

TLP:CLEAR

GNU C Library Buffer Overflow Vulnerability

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.

Facts

  • Vendor: GNU
  • Product: GNU C Library
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 63.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 21 November 2023
  • First known exploitation: 21 November 2023
  • CISA's deadline for US federal agencies: 12 December 2023
  • Weakness: CWE-122
  • First seen by Risk Letters: 21 November 2023

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD