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TITLE:
Alien Arena "SV_BeginDownload_f()" Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA39143

VERIFY ADVISORY:
http://secunia.com/advisories/39143/

DESCRIPTION:
Some vulnerabilities have been reported in Alien Arena, which can be
exploited by malicious people to disclose potentially sensitive
information and cause a DoS (Denial of Service).

Input sanitation errors within the "SV_BeginDownload_f()" function in
server/sv_user.c can be exploited to crash a vulnerable server by
sending a download request ending in "." or "/" (Linux only) or by
supplying a negative offset (all platforms).

The vulnerabilities are reported in version 7.33. Other versions may
also be affected.

SOLUTION:
Fixed in the SVN repository.

PROVIDED AND/OR DISCOVERED BY:
Originally reported in Quake 2 by Richard Stanway. Reported in Alien
Arena by "bugmenot".

ORIGINAL ADVISORY:
http://corent.proboards.com/index.cgi?board=bugreport&action=display&thread=4761
http://www.quakedev.com/forums/index.php?topic=53.0

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