Ubuntu 12.04 LTS / 12.10 : ruby1.9.1 vulnerabilities (USN-1614-1)

Ubuntu Security Notice (C) 2012-2013 Canonical, Inc. / NASL script (C) 2012-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

Tyler Hicks and Shugo Maeda 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.
USN-1602-1 fixed these vulnerabilities in other Ubuntu releases. This
update provides the corresponding updates for Ubuntu 12.10.
(CVE-2012-4464, CVE-2012-4466)

Peter Bex discovered that Ruby incorrectly handled file path strings
when opening files. An attacker could use this flaw to open or create
unexpected files. (CVE-2012-4522).

Solution :

Update the affected libruby1.9.1 package.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N)
CVSS Temporal Score : 3.7
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 62661 ()

Bugtraq ID: 55757
56115

CVE ID: CVE-2012-4464
CVE-2012-4466
CVE-2012-4522