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Debian Security Advisory DSA 3142-1 (eglibc - security update)

Information

Severity

Severity

Critical

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

9 years ago

Modified

Modified

2 years ago

Summary

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.

Affected Software

Affected Software

eglibc on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

For the stable distribution (wheezy), these problems have been fixed in version 2.13-38+deb7u7. For the upcoming stable distribution (jessie) and the unstable distribution (sid), the CVE-2015-0235 issue has been fixed in version 2.18-1 of the glibc package. We recommend that you upgrade your eglibc packages.

Common Vulnerabilities and Exposures (CVE)