|
phpBB "Referer" Header Session ID Disclosure
|
|
|
|
|
Secunia Advisory:
|
SA18693
|
|
|
Release Date:
|
2006-02-06
|
|
Last Update:
|
2008-04-15
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
Hijacking
Cross Site Scripting
Exposure of sensitive information
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Workaround
|
|
| Software: | phpBB 2.x
|
| | CVE reference: | CVE-2006-0437 (Secunia mirror)
CVE-2006-0438 (Secunia mirror)
|
|
|
|
|
|
Description:
Maksymilian Arciemowicz has discovered a vulnerability in phpBB, which can be exploited by malicious people to disclose sensitive information.
The problem is that the session ID is included in the "Referer" HTTP header when sending certain requests for external avatar images and certain BBcode referencing external web sites (e.g. when performing various moderation actions, like splitting a thread). This can e.g. be exploited to disclose a user's session ID by tricking the user into performing an affected operation.
This is related to:
SA16868
Successful exploitation may open up for various cross-site request forgery and cross-site scripting attacks.
The vulnerability is confirmed in version 2.0.19 and 2.0.23. Other versions may also be affected.
Solution:
Disable support for external avatar images and BBcode IMG tags.
Reportedly fixed in the SVN repository.
Provided and/or discovered by:
Maksymilian Arciemowicz. Additional information provided by NBBN.
Changelog:
2006-04-14: Updated "Solution" section.
2008-03-20: Updated advisory with additional information provided by NBBN. Added version 2.0.23 and 3.0.0 as affected.
2008-04-15: Updated "Description" and "Solution" sections. According to the vendor, SIDs are not sensitive information in version 3.x. Leaked SIDs can therefore not be used to conduct further attacks.
Original Advisory:
http://securityreason.com/achievement_securityalert/31
Other References:
SA16868:
http://secunia.com/advisories/16868/
|
|
|
|
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
|
|
|
37 Related Secunia Security Advisories, displaying 10
|
|
|
1. phpBB Private Message Deletion Cross-Site Request Forgery
|
|
2. phpBB privmsg.php Cross-Site Request Forgery and Cross-Site Scripting
|
|
3. phpBB "avatar_path" PHP Code Execution Vulnerability
|
|
4. phpBB "Upload Avatar from a URL" Weakness and PHP Code Execution
|
|
5. phpBB "cur_password" Cross-Site Scripting Vulnerability
|
|
6. phpBB "gen_rand_string()" Predictable RNG Weakness
|
|
7. phpBB "url" bbcode Script Insertion Vulnerability
|
|
8. phpBB "Allow HTML" Script Insertion Security Issue
|
|
9. phpBB Multiple Vulnerabilities
|
|
10. phpBB Avatar Script Insertion Vulnerability
|
Show all related advisories
|
|
|
Send Feedback to Secunia
|
|
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.
Ideas, suggestions, and other feedback are most welcome.
|
|
|
|
