66116 : Ubuntu pam MOTD Module User File Stamps Symlink Privilege Escalation
Printer | http://osvdb.org/66116 | Email This | Edit Vulnerability

Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
6	1373	almost 3 years ago	almost 3 years ago	4 times	45%

This Entry needs help! It is only 45% Complete. Click the edit link above to add more information.

Contributing is fast and easy, and benefits the entire security community.

Timeline

Disclosure Date
2010-07-07

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2010-0832" target="_blank">CVE</a>)</em> : pam_motd (aka the MOTD module) in libpam-modules before 1.1.0-2ubuntu1.1 in PAM on Ubuntu 9.10 and libpam-modules before 1.1.1-2ubuntu5 in PAM on Ubuntu 10.04 LTS allows local users to change the ownership of arbitrary files via a symlink attack on .cache in a user's home directory, related to "user file stamps" and the motd.legal-notice file.

Classification

Location: Local Access Required
Attack Type: Race Condition
Impact: Loss of Integrity
Solution: Patch / RCS
Exploit: Exploit Unknown
Disclosure: Vendor Verified, Vendor Verified, Coordinated Disclosure
OSVDB: Authentication Required

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Ubuntu has released a patch to address this vulnerability.

Products

Unknown or Incomplete

References

Exploit Database: 14273
CVE ID: 2010-0832 (see also: NVD)
Secunia Advisory ID: 40512
Bugtraq ID: 41465
ISS X-Force ID: 60194
VUPEN Advisory: ADV-2010-1747
Other Advisory URL: http://twitter.com/jonoberheide/statuses/18009527979
http://www.h-online.com/security/news/item/Ubuntu-closes-root-hole-1034618.html
http://www.ubuntu.com/usn/USN-959-1
Vendor Specific News/Changelog Entry: https://lists.ubuntu.com/archives/ubuntu-security-announce/2010-July/001117.html

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 6.9
Source: nvd.nist.gov | Generated: 2010-07-12 | Disagree?

Comments

Add Comment Hide Add Comment

No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.