OSVDB ID: 77531

Title: SquirrelMail Change_passwd Plugin Password Update Temporary File Symlink Arbitrary File Overwrite

Info

Disclosure

Apr 23, 2004

Discovery

Apr 20, 2004

Dates

Exploit

Unknown

Solution

Apr 23, 2004

Description

SquirrelMail Change_passwd Plugin contains a flaw that may allow a malicious local user to overwrite arbitrary files on the system as well as read the contents of /etc/shadow. The issue is due to the program creating temporary files insecurely when updating a user's password. It is possible for a local attacker to use a symlink attack to cause the program to unexpectedly write to, or overwrite an attacker specified file.

Classification

Location: Local Access Required
Attack Type: Information Disclosure, Input Manipulation
Impact: Loss of Confidentiality, Loss of Integrity
Solution: Upgrade
Exploit: Exploit Private
Disclosure: RBS Confirmed, Vendor Verified, Coordinated Disclosure

Solution

Upgrade to version 4.0 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Paul Lesniewski

Squirrelmail Change_passwd Plugin

3.1

References

Secunia Advisory ID: 11424
Other Advisory URL: http://secunia.com/secunia_research/2004-4/
Vendor Specific News/Changelog Entry: http://www.squirrelmail.org/plugin_view.php?id=117

Credit

Unknown or Incomplete

Direct URL: http://osvdb.org/77531