Atlassian Confluence 3.0 Cross Site Request Forgery

2012-09-25 / 2014-05-14
Risk: Low
Local: No
Remote: Yes
CWE: CWE-352

CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

Product: Confluence Vendor: Atlassian Version: 3.0 / Current Tested Version: 3.4.6 Vendor Notified Date: June 31, 2011 Release Date: September 19, 2012 Risk: Medium Authentication: Depends on configuration. Remote: Yes Description: Multiple Cross-Site Request Forgery (CSRF) vulnerabilities in Confluence 3.0 and below allow remote attackers to submit actions on their behalf. Newer versions may also be vulnerable. Pages that allow a potential attacker to add images (such as in the comments sections) allow CSRF. By not properly checking each URL, an attacker can execute requests on behalf of a legitimate user. As a proof-of-concept, a comment is added to a page which includes the logout URL inside the wiki markup image tags. Whenever anyone visits that page they are automatically logged out because the page attempts to load the image and executes the 'src=url'. This comment can be added to anyone's profile, which would force them to be logged out the moment they login. This can be used for more complex attacks too but going beyond the POC was not necessary. Exploit POC: 1. Add comment. 2. !|border=1! Vendor Notified: Yes Vendor Response: Requested time to resolve. Vendor Update: 1.5 years later, marked as "Resolution: Won't Fix" Reference: Credit: Robert Gilbert Senior Consultant HALOCK Security Labs, Purpose Driven Security(tm) rgilbert [-at-] halock [-dot-] com Note: This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, and/or confidential. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by telephone and delete this message immediately.


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