Off-by-one Error Affecting glibc-common package, versions <0:2.28-164.el8_5.3


medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High
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NVD
7.8 high
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SUSE
7.4 high
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Red Hat
7.4 high

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  • Snyk ID SNYK-CENTOS8-GLIBCCOMMON-2336677
  • published 12 Jan 2022
  • disclosed 11 Jan 2022

How to fix?

Upgrade Centos:8 glibc-common to version 0:2.28-164.el8_5.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-common package and not the glibc-common package as distributed by Centos:8. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.