Off-by-one Error Affecting glibc package, versions [,2.33-4)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-GLIBC-2992546
  • published25 Aug 2022
  • disclosed25 Aug 2022
  • creditQualys Research Labs

Introduced: 25 Aug 2022

CVE-2021-3999  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade glibc to version 2.33-4 or higher.

Overview

Affected versions of this package are vulnerable to Off-by-one Error via the getcwd function, which 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.

CVSS Scores

version 3.1