Detections
Analytics
CVE-2012-6711
high
Description
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
https://usn.ubuntu.com/4180-1/
https://support.f5.com/csp/article/K05122252?utm_source=f5support&%3Butm_medium=RSS
https://support.f5.com/csp/article/K05122252
https://bugzilla.redhat.com/show_bug.cgi?id=1721071