Debian: DSA-3142-1 Critical: eglibc Buffer Overflow and Execution Risk

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

CVE-2015-0235

Qualys discovered that the gethostbyname and gethostbyname2
functions were subject to a buffer overflow if provided with a
crafted IP address argument. This could be used by an attacker to
execute arbitrary code in processes which called the affected
functions.

The original glibc bug was reported by Peter Klotz.

CVE-2014-7817

Tim Waugh of Red Hat discovered that the WRDE_NOCMD option of the
wordexp function did not suppress command execution in all cases.
This allows a context-dependent attacker to execute shell
commands.

CVE-2012-6656
CVE-2014-6040

The charset conversion code for certain IBM multi-byte code pages
could perform an out-of-bounds array access, causing the process
to crash. In some scenarios, this allows a remote attacker to
cause a persistent denial of service.

For the stable distribution (wheezy), these problems have been fixed in
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