Ubuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : ruby1.8 vulnerabilities (USN-1603-1)

Medium Nessus Plugin ID 62497


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


Shugo Maedo and Vit Ondruch discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions.
(CVE-2012-4466, CVE-2012-4481).

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.


Update the affected libruby1.8 package.

Plugin Details

Severity: Medium

ID: 62497

File Name: ubuntu_USN-1603-1.nasl

Version: $Revision: 1.5 $

Type: local

Agent: unix

Published: 2012/10/11

Modified: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libruby1.8, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.04, cpe:/o:canonical:ubuntu_linux:11.10, cpe:/o:canonical:ubuntu_linux:12.04:-:lts

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/10/10

Reference Information

CVE: CVE-2012-4466, CVE-2012-4481

BID: 55757, 55813

OSVDB: 70957

USN: 1603-1