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Out-of-bounds Write Affecting glibc package, versions <2.31-13+deb11u7

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 1.57% (88th percentile)
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NVD
7.8 high
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Red Hat
7.8 high

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  • Snyk ID SNYK-DEBIAN11-GLIBC-5927133
  • published 4 Oct 2023
  • disclosed 3 Oct 2023
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Introduced: 3 Oct 2023

CVE-2023-4911 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:11 glibc to version 2.31-13+deb11u7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

References