Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : eglibc, glibc vulnerabilities (USN-2519-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Arnaud Le Blanc discovered that the GNU C Library incorrectly handled
file descriptors when resolving DNS queries under high load. This may
cause a denial of service in other applications, or an information
leak. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and
Ubuntu 14.04 LTS. (CVE-2013-7423)

It was discovered that the GNU C Library incorrectly handled receiving
a positive answer while processing the network name when performing
DNS resolution. A remote attacker could use this issue to cause the
GNU C Library to hang, resulting in a denial of service.
(CVE-2014-9402)

Joseph Myers discovered that the GNU C Library wscanf function
incorrectly handled memory. A remote attacker could possibly use this
issue to cause the GNU C Library to crash, resulting in a denial of
service, or possibly execute arbitrary code. This issue only affected
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1472,
CVE-2015-1473).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libc6 package.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.1
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 81572 ()

Bugtraq ID: 71670
72428
72499

CVE ID: CVE-2013-7423
CVE-2014-9402
CVE-2015-1472
CVE-2015-1473

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