lighttpd buffer_urldecode function source code disclosure
| lighttpd-source-disclosure (19350) |  Low Risk |
Description:
lighttpd could allow a remote attacker to obtain sensitive information, caused by improper handling of control sequences in the buffer_urldecode function. By appending '%00' to the file name in a specially-crafted URL request, a remote attacker could cause the requested file's source code to be disclosed.
Consequences:
Obtain Information
Remedy:
Upgrade to the latest version of lighttpd (1.3.10 or later), available from the lighttpd Download Web page. See References.
— OR —
Apply the fix for 1.3.7, available from the lighttpd Patch Web page. See References.
For Gentoo Linux:
Upgrade to the latest version of lighttpd (1.3.10-r1 or later), as listed in GLSA 200502-21. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Jan Kneschke, Sat, 12 Feb 2005 20:32:32 +0100: script exposure in lighttpd 1.3.7 and below.
- lighttpd Download Web page: lighttpd :: my home.
- lighttpd Patch Web page: Recommended patches for 1.3.7.
- BID-12567: Lighttpd Remote CGI Script Disclosure Vulnerability
- CVE-2005-0453: The buffer_urldecode function in Lighttpd 1.3.7 and earlier does not properly handle control characters, which allows remote attackers to obtain the source code for CGI and FastCGI scripts via a URL with a %00 (null) character after the file extension.
- GLSA-200502-21: lighttpd: Script source disclosure
- OSVDB ID: 13844: lighttpd Null Byte Request CGI Script Source Code Disclosure
- SA14297: lighttpd "%00" Application Source Code Disclosure Vulnerability
Platforms Affected:
- Gentoo Linux
- lighttpd lighttpd 1.3.7
- NetBSD NetBSD
Reported:
Feb 16, 2005
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