Ubuntu 8.10 : ruby1.9 vulnerability (USN-691-1)

Medium Nessus Plugin ID 37474


The remote Ubuntu host is missing one or more security-related patches.


Laurent Gaffie discovered that Ruby did not properly check for memory allocation failures. If a user or automated system were tricked into running a malicious script, an attacker could cause a denial of service. (CVE-2008-3443)

This update also fixes a regression in the upstream patch previously applied to fix CVE-2008-3790. The regression would cause parsing of some XML documents to fail.

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 packages.

Plugin Details

Severity: Medium

ID: 37474

File Name: ubuntu_USN-691-1.nasl

Version: $Revision: 1.11 $

Type: local

Agent: unix

Published: 2009/04/23

Modified: 2016/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.3

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:irb1.9, p-cpe:/a:canonical:ubuntu_linux:libdbm-ruby1.9, p-cpe:/a:canonical:ubuntu_linux:libgdbm-ruby1.9, p-cpe:/a:canonical:ubuntu_linux:libopenssl-ruby1.9, p-cpe:/a:canonical:ubuntu_linux:libreadline-ruby1.9, p-cpe:/a:canonical:ubuntu_linux:libruby1.9, p-cpe:/a:canonical:ubuntu_linux:libruby1.9-dbg, p-cpe:/a:canonical:ubuntu_linux:libtcltk-ruby1.9, p-cpe:/a:canonical:ubuntu_linux:rdoc1.9, p-cpe:/a:canonical:ubuntu_linux:ri1.9, p-cpe:/a:canonical:ubuntu_linux:ruby1.9, p-cpe:/a:canonical:ubuntu_linux:ruby1.9-dev, p-cpe:/a:canonical:ubuntu_linux:ruby1.9-elisp, p-cpe:/a:canonical:ubuntu_linux:ruby1.9-examples, cpe:/o:canonical:ubuntu_linux:8.10

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2008/12/16

Reference Information

CVE: CVE-2008-3443, CVE-2008-3790

BID: 30682, 30802

OSVDB: 47753, 47800

USN: 691-1

CWE: 20, 399