Detections
Analytics

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

medium Nessus Plugin ID 65640

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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).

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 python-nova package.

See Also

https://usn.ubuntu.com/1771-1/

Plugin Details

Severity: Medium

ID: 65640

File Name: ubuntu_USN-1771-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 3/21/2013

Updated: 9/19/2019

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:12.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python-nova, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:11.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/20/2013

Vulnerability Publication Date: 3/22/2013

Reference Information

CVE: CVE-2013-0335, CVE-2013-1838

BID: 58189, 58492

USN: 1771-1