Integer Overflow or Wraparound Affecting glibc package, versions <2.31-0ubuntu9.7


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.6% (88th percentile)

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  • Snyk IDSNYK-UBUNTU2004-GLIBC-1315365
  • published1 Jul 2021
  • disclosed22 Jul 2021

Introduced: 1 Jul 2021

CVE-2021-35942  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 glibc to version 2.31-0ubuntu9.7 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 Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

CVSS Scores

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