Jaws 1.1.1 Open Redirect / Object Injection / Cookie Flags

2016.11.19
Credit: Tim Coen
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-601

Security Advisory - Curesec Research Team 1. Introduction Affected Product: Jaws 1.1.1 Fixed in: not fixed Fixed Version Link: n/a Vendor Website: http://jaws-project.com/ Vulnerability Type: Object Injection, Open Redirect, Cookie Flags Remote Exploitable: Yes Reported to vendor: 09/05/2016 Disclosed to public: 11/10/2016 Release mode: Full Disclosure CVE: n/a Credits Tim Coen of Curesec GmbH 2. Overview Jaws is a content management system written in PHP. In version 1.1.1, it is vulnerable to various low to medium impact issues. It contains an Object Injection, which does not seem to be currently exploitable without custom changes made by users; its session cookies are not set to httpOnly, which may make it easier to exploit XSS issues; and it contains an Open Redirect issue. 3. Details Open Redirect / Phishing After a login is performed, a user is redirected to a website defined in the URL, which may be exploited in phishing attacks. Note that the redirect only works if the user was not logged in previously, and then only after a login is performed. Proof of Concept: http://localhost/jaws-complete-1.1.1/index.php/users/login/referrer/ 687474703a2f2f6578616d706c652e636f6d.html 687474703a2f2f6578616d706c652e636f6d is the result of a hex2bin call. Object Injection All parameters passed to the application are passed to unserialize, making the application vulnerable to Object Injection. Currently, there does not seem to be code that can be exploited via Object Injection, but this may change in the future, or users may have custom code which isn't in itself vulnerable, but would result in vulnerable code in combination with this issue. Proof of Concept: All values passed to the application are vulnerable, for example a cookie: GET /jaws-complete-1.1.1/admin.php?checksess HTTP/1.1 Host: localhost Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: JAWSSESSID=O:{}; Connection: close Cache-Control: max-age=0 Cookie Flags The JAWSSESSID cookie does not have the httpOnly flag set, making it slightly easier to exploit XSS vulnerabilities. 4. Solution This issue was not fixed by the vendor. 5. Report Timeline 09/05/2016 Informed Vendor about Issue (no reply) 09/15/2016 Reminded Vendor of Disclosure Date (no reply) 11/10/2016 Disclosed to public Blog Reference: https://www.curesec.com/blog/article/blog/Jaws-111-Object-Injection-Open-Redirect-Cookie-Flags-168.html -- blog: https://www.curesec.com/blog tweet: https://twitter.com/curesec Curesec GmbH Curesec Research Team Josef-Orlopp-StraAe 54 10365 Berlin, Germany


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