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Out-of-Bounds Affecting bash package, versions <4.3-1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-DEBIAN12-BASH-1542051
  • published23 Jun 2019
  • disclosed18 Jun 2019
Report a new vulnerability Found a mistake?

Introduced: 18 Jun 2019

CVE-2012-6711  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:12 bash to version 4.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bash package and not the bash package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A heap-based buffer overflow exists in GNU Bash before 4.3 when wide characters, not supported by the current locale set in the LC_CTYPE environment variable, are printed through the echo built-in function. A local attacker, who can provide data to print through the "echo -e" built-in function, may use this flaw to crash a script or execute code with the privileges of the bash process. This occurs because ansicstr() in lib/sh/strtrans.c mishandles u32cconv().