Heap-based Buffer Overflow Affecting bash-doc package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-BASHDOC-1325805
- published26 Jul 2021
- disclosed18 Jun 2019
Introduced: 18 Jun 2019
CVE-2012-6711 (opens in a new tab)How to fix?
There is no fixed version for RHEL:7 bash-doc.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bash-doc package and not the bash-doc package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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
- http://www.securityfocus.com/bid/108824
- https://support.f5.com/csp/article/K05122252
- https://support.f5.com/csp/article/K05122252?utm_source=f5support&utm_medium=RSS
- https://access.redhat.com/security/cve/CVE-2012-6711
- http://git.savannah.gnu.org/cgit/bash.git/commit/?h=devel&id=863d31ae775d56b785dc5b0105b6d251515d81d5
- https://bugzilla.redhat.com/show_bug.cgi?id=1721071
- https://usn.ubuntu.com/4180-1/
- https://support.f5.com/csp/article/K05122252?utm_source=f5support&%3Butm_medium=RSS