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Off-by-one Error Affecting eglibc package, versions <2.19-0ubuntu6.15+esm3

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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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-UBUNTU1404-EGLIBC-2359265
  • published 2 May 2024
  • disclosed 24 Aug 2022
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Introduced: 24 Aug 2022

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

How to fix?

Upgrade Ubuntu:14.04 eglibc to version 2.19-0ubuntu6.15+esm3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream eglibc package and not the eglibc package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 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.