- CVE-2012-6656
Fix validation check when converting from ibm930 to utf.
When converting IBM930 code with iconv(), if IBM930 code which
includes invalid multibyte character 0xffff is specified, then
iconv() segfaults.
- CVE-2014-6040
Crashes on invalid input in IBM gconv modules [BZ #17325]
These changes are based on the fix for BZ #14134 in commit
6e230d11837f3ae7b375ea69d7905f0d18eb79e5.
- CVE-2014-7817
The function wordexp() fails to properly handle the WRDE_NOCMD
flag when processing arithmetic inputs in the form of “$((… ``))”
where “…” can be anything valid. The backticks in the arithmetic
epxression are evaluated by in a shell even if WRDE_NOCMD forbade
command substitution. This allows an attacker to attempt to pass
dangerous commands via constructs of the above form, and bypass
the WRDE_NOCMD flag. This patch fixes this by checking for WRDE_NOCMD
in exec_comm(), the only place that can execute a shell. All other
checks for WRDE_NOCMD are superfluous and removed.
For Debian 6 Squeeze, these issues have been fixed in eglibc version 2.11.3-4+deb6u2