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CVE-2012-6711

Status Candidate

Overview

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().

Related Files

Ubuntu Security Notice USN-4180-1
Posted Nov 11, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4180-1 - It was discovered that Bash incorrectly handled certain inputs. An attacker could possibly use this issue to cause a crash or execute arbitrary code.

tags | advisory, arbitrary, bash
systems | linux, ubuntu
advisories | CVE-2012-6711
SHA-256 | 623be0eec5677140c8ee4be1687509db194744de8f6f3c1075cfdeee00932de0
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