CVE-2012-6711
unknown
CVSS v3
—
CVSS v2
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VIR risk
—
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().
Predictions
Exploit likelihood
20%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-6711
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2012-6711.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.3-1 |
| debian | bullseye | fixed | 4.3-1 |
| debian | forky | fixed | 4.3-1 |
| debian | sid | fixed | 4.3-1 |
| debian | trixie | fixed | 4.3-1 |
References
Verify integrity in audit chain (admin only). AS-IS.