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().
References
Link | Resource |
---|---|
http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5 | Mailing List Patch Third Party Advisory |
http://www.securityfocus.com/bid/108824 | |
https://bugzilla.redhat.com/show_bug.cgi?id=1721071 | Issue Tracking Third Party Advisory |
https://support.f5.com/csp/article/K05122252 | |
https://support.f5.com/csp/article/K05122252?utm_source=f5support&%3Butm_medium=RSS | |
https://usn.ubuntu.com/4180-1/ |
History
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MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2019-06-18T17:34:08
Updated: 2019-11-11T15:06:56
Reserved: 2019-06-18T00:00:00
Link: CVE-2012-6711
JSON object: View
NVD Information
Status : Modified
Published: 2019-06-18T18:15:09.247
Modified: 2023-11-07T02:13:33.410
Link: CVE-2012-6711
JSON object: View
Redhat Information
No data.
CWE