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().
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| gnu | bash | 4.2 - 4.3 | - |
| redhat | enterprise_linux | - | - |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
2
Affected Products
12
References
gnu / bash
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability
Impact