CVE-2012-6711

原始描述

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().

受影响的软件

• Bash ≥ 4.2 ≤ 4.3 精确匹配

详情

发布日期

2019-06-18

最后修改

2026-06-16

CVSS 向量

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-119

参考资料

• cve.org/CVE-2012-6711
• nvd.nist.gov/vuln/detail/CVE-2012-6711
• git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d...
• www.securityfocus.com/bid/108824
• bugzilla.redhat.com/show_bug.cgi?id=1721071
• support.f5.com/csp/article/K05122252
• support.f5.com/csp/article/K05122252?utm_source=f5support&amp%3Butm_medium=RSS
• usn.ubuntu.com/4180-1/