Ubuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : radvd vulnerabilities (USN-1257-1)

Ubuntu Security Notice (C) 2011-2014 Canonical, Inc. / NASL script (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Vasiliy Kulikov discovered that radvd incorrectly parsed the
ND_OPT_DNSSL_INFORMATION option. A remote attacker could exploit this
with a specially crafted request and cause the radvd daemon to crash,
or possibly execute arbitrary code. The default compiler options for
affected releases should reduce the vulnerability to a denial of
service. This issue only affected Ubuntu 11.04 and 11.10.
(CVE-2011-3601)

Vasiliy Kulikov discovered that radvd incorrectly filtered interface
names when creating certain files. A local attacker could exploit this
to overwrite certain files on the system, bypassing intended
permissions. (CVE-2011-3602)

Vasiliy Kulikov discovered that radvd incorrectly handled certain
lengths. A remote attacker could exploit this to cause the radvd
daemon to crash, resulting in a denial of service. (CVE-2011-3604)

Vasiliy Kulikov discovered that radvd incorrectly handled delays when
used in unicast mode, which is not the default in Ubuntu. If used in
unicast mode, a remote attacker could cause radvd outages, resulting
in a denial of service. (CVE-2011-3605).

Solution :

Update the affected radvd package.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 56776 ()

Bugtraq ID: 50395

CVE ID: CVE-2011-3601
CVE-2011-3602
CVE-2011-3604
CVE-2011-3605