vulnerability
Red Hat: CVE-2012-6711: bash: heap-based buffer overflow during echo of unsupported characters
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | Jun 18, 2019 | Jul 9, 2025 | Jul 9, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Jun 18, 2019
Added
Jul 9, 2025
Modified
Jul 9, 2025
Description
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().
Solution
no-fix-redhat-rpm-package
References
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