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.
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
| Link | Tags |
|---|---|
| https://exchange.xforce.ibmcloud.com/vulnerabilities/60194 | vdb entry |
| http://www.ubuntu.com/usn/USN-959-1 | vendor advisory |
| http://www.securityfocus.com/bid/41465 | patch vdb entry exploit |
| http://www.exploit-db.com/exploits/14273 | exploit |
| http://www.h-online.com/security/news/item/Ubuntu-closes-root-hole-1034618.html | |
| http://twitter.com/jonoberheide/statuses/18009527979 | |
| http://secunia.com/advisories/40512 | third party advisory vendor advisory |
| http://www.osvdb.org/66116 | vdb entry |
| http://www.vupen.com/english/advisories/2010/1747 | vdb entry vendor advisory |