Debian: DSA-3169-1 Moderate: eglibc Denial of Service Advisory

Several vulnerabilities have been fixed in eglibc, Debian's version of
the GNU C library:

CVE-2012-3406
The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka
glibc) 2.5, 2.12, and probably other versions does not "properly restrict
the use of" the alloca function when allocating the SPECS array, which
allows context-dependent attackers to bypass the FORTIFY_SOURCE
format-string protection mechanism and cause a denial of service (crash)
or possibly execute arbitrary code via a crafted format string using
positional parameters and a large number of format specifiers, a different
vulnerability than CVE-2012-3404 and CVE-2012-3405.

CVE-2013-7424
An invalid free flaw was found in glibc's getaddrinfo() function when used
with the AI_IDN flag. A remote attacker able to make an application call
this function could use this flaw to execute arbitrary code with the
permissions of the user running the application. Note that this flaw only
aff...