Joined: 07 Aug 2002
Location: Pelotas, BR
|Posted: Fri Jan 28, 2005 3:04 pm Post subject: [ GLSA 200501-39 ] SquirrelMail: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: SquirrelMail: Multiple vulnerabilities (GLSA 200501-39)
Date: January 28, 2005
SquirrelMail fails to properly sanitize user input, which could lead to arbitrary code execution and compromise webmail accounts.
SquirrelMail is a webmail package written in PHP. It supports IMAP and SMTP and can optionally be installed with SQL support.
Vulnerable: <= 1.4.3a-r2
Unaffected: >= 1.4.4
Architectures: All supported architectures
SquirrelMail fails to properly sanitize certain strings when decoding specially-crafted strings, which can lead to PHP file inclusion and XSS.
- Insufficient checking of incoming URLs in prefs.php (CAN-2005-0075) and in webmail.php (CAN-2005-0103).
- Insufficient escaping of integers in webmail.php (CAN-2005-0104).
By sending a specially-crafted URL, an attacker can execute arbitrary code from the local system with the permissions of the web server. Furthermore by enticing a user to load a specially-crafted URL, it is possible to display arbitrary remote web pages in Squirrelmail's frameset and execute arbitrary scripts running in the context of the victim's browser. This could lead to a compromise of the user's webmail account, cookie theft, etc.
The arbitrary code execution is only possible with "register_globals" set to "On". Gentoo ships PHP with "register_globals" set to "Off" by default. There are no known workarounds for the other issues at this time.
All SquirrelMail users should upgrade to the latest version:
Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update.
|# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.4"
Last edited by GLSA on Sun May 07, 2006 4:54 pm; edited 1 time in total