Ubuntu 8.10 / 9.04 / 9.10 : ruby1.9 vulnerabilities (USN-900-1)

critical Nessus Plugin ID 44640


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


Emmanouel Kellinis discovered that Ruby did not properly handle certain string operations. An attacker could exploit this issue and possibly execute arbitrary code with application privileges.

Giovanni Pellerano, Alessandro Tanasi, and Francesco Ongaro discovered that Ruby did not properly sanitize data written to log files. An attacker could insert specially crafted data into log files which could affect certain terminal emulators and cause arbitrary files to be overwritten, or even possibly execute arbitrary commands.

It was discovered that Ruby did not properly handle string arguments that represent large numbers. An attacker could exploit this and cause a denial of service. This issue only affected Ubuntu 9.10.

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.

See Also


Plugin Details

Severity: Critical

ID: 44640

File Name: ubuntu_USN-900-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 2/17/2010

Updated: 9/19/2019

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:POC/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, cpe:/o:canonical:ubuntu_linux:9.04, cpe:/o:canonical:ubuntu_linux:9.10

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: 2/16/2010

Vulnerability Publication Date: 6/11/2009

Reference Information

CVE: CVE-2009-1904, CVE-2009-4124, CVE-2009-4492

BID: 35278, 37710

USN: 900-1

CWE: 20, 119, 189