webgrind 1.0 (file param) Local File Inclusion Vulnerability

2012-02-26 / 2012-08-15
Credit: Michael Meyer
Risk: High
Local: No
Remote: Yes
CWE: CWE-98


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

Vendor: Joakim Nygard and Jacob Oettinger Product web page: http://code.google.com/p/webgrind Affected version: 1.0 (v1.02 in trunk on github) Summary: Webgrind is an Xdebug profiling web frontend in PHP5. Desc: webgrind suffers from a file inlcusion vulnerability (LFI) when input passed thru the 'file' parameter to index.php is not properly verified before being used to include files. This can be exploited to include files from local resources with directory traversal attacks and URL encoded NULL bytes. ---------------------------------------- /index.php: ----------- 122: case 'fileviewer': 123: $file = get('file'); 124: $line = get('line'); ---------------------------------------- Tested on: Microsoft Windows XP Professional SP3 (EN) Apache 2.2.21 PHP 5.3.9 MySQL 5.5.20 Vulnerability discovered by Michael Meyer michael.meyer greenbone net Vendor status: [22.02.2012] Vulnerability discovered. [22.02.2012] Vendor notified. [24.02.2012] No response from the vendor. [25.02.2012] Public security advisory released. Advisory ID: ZSL-2012-5075 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5075.php Vendor: http://code.google.com/p/webgrind/issues/detail?id=66 22.02.2012 --- http://<host>/webgrind/index.php?file=/etc/passwd&op=fileviewer http://<host>/webgrind/index.php?file=/boot.ini&op=fileviewer

References:

http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5075.php
http://code.google.com/p/webgrind/issues/detail?id=66


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