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Category:   Application (Web Server/CGI)  >   lighttpd Vendors:   Kneschke, J.
lighttpd Authentication Decoding Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1026359
SecurityTracker URL:
CVE Reference:   CVE-2011-4362   (Links to External Site)
Date:  Nov 30 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 1.4.29 and prior versions
Description:   A vulnerability was reported in lighttpd. A remote user can cause denial of service conditions.

A remote user can send specially crafted authentication characters to trigger an out-of-bounds memory read and cause the target service to crash.

Non ASCII characters above 0x7f can trigger this flaw.

The vulnerability resides in 'src/http_auth.c'.

Xi Wang reported this vulnerability.

Impact:   A remote user can cause the target service to crash.
Solution:   The vendor has issued a source code fix ('src/http_auth.c'; svn revision 2806).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

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