Improper Input Validation Affecting glibc package, versions <2.17-94


low

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 1.58% (88th percentile)
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NVD
5.6 medium
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Red Hat
4.9 medium

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  • Snyk ID SNYK-DEBIAN11-GLIBC-524323
  • published 4 Oct 2013
  • disclosed 4 Oct 2013

How to fix?

Upgrade Debian:11 glibc to version 2.17-94 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.

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.