Ubuntu 11.10 / 12.04 LTS / 12.10 : nova vulnerabilities (USN-1771-1)

Ubuntu Security Notice (C) 2013 Canonical, Inc. / NASL script (C) 2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

Loganathan Parthipan discovered that Nova did not properly validate
VNC tokens after an instance was deleted. An authenticated attacker
could exploit this to access other virtual machines under certain
circumstances. This issue did not affect Ubuntu 11.10. (CVE-2013-0335)

Vish Ishaya discovered that Nova did not always enforce quotas on
fixed IPs. An authenticated attacker could exploit this to cause a
denial of service via resource consumption. Nova will now enforce a
quota limit of 10 fixed IPs per instance, which is configurable via
'quota_fixed_ips' in /etc/nova/nova.conf. (CVE-2013-1838).

Solution :

Update the affected python-nova package.

Risk factor :

Medium / CVSS Base Score : 6.0
(CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P)
CVSS Temporal Score : 4.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 65640 ()

Bugtraq ID: 58189
58492

CVE ID: CVE-2013-0335
CVE-2013-1838