Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : libksba vulnerabilities (USN-2982-1)

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


Synopsis :

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

Description :

Hanno Bock discovered that Libksba incorrectly handled decoding
certain BER data. An attacker could use this issue to cause Libksba to
crash, resulting in a denial of service. This issue only applied to
Ubunt 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4353)

Hanno Bock discovered that Libksba incorrectly handled decoding
certain BER data. An attacker could use this issue to cause Libksba to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only applied to Ubunt 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2016-4354, CVE-2016-4355)

Hanno Bock discovered that Libksba incorrectly handled incorrect
utf-8 strings when decoding certain DN data. An attacker could use
this issue to cause Libksba to crash, resulting in a denial of
service, or possibly execute arbitrary code. This issue only applied
to Ubunt 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4356)

Pascal Cuoq discovered that Libksba incorrectly handled incorrect
utf-8 strings when decoding certain DN data. An attacker could use
this issue to cause Libksba to crash, resulting in a denial of
service, or possibly execute arbitrary code. (CVE-2016-4574)

Pascal Cuoq discovered that Libksba incorrectly handled decoding
certain data. An attacker could use this issue to cause Libksba to
crash, resulting in a denial of service. (CVE-2016-4579).

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 libksba8 package.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.9
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 91220 ()

Bugtraq ID:

CVE ID: CVE-2016-4353
CVE-2016-4354
CVE-2016-4355
CVE-2016-4356
CVE-2016-4574
CVE-2016-4579

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now