<p>Upgrade <code>Centos:8</code> <code>glibc</code> to version 0:2.28-164.el8_5.3 or higher.</p>

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

Snyk CVSS

Attack Complexity High

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS 0.04% (6^th percentile)

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Snyk ID SNYK-CENTOS8-GLIBC-2336773
published 12 Jan 2022
disclosed 11 Jan 2022

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Introduced: 11 Jan 2022

CVE-2021-3999 Open this link in a new tab CWE-193 Open this link in a new tab

How to fix?

Upgrade Centos:8 glibc 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 package and not the glibc package as distributed by Centos. 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.