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Date: Mon, 27 Aug 2007 20:33:56 +0400
Cc: "'BugTraq'" <>,
Subject: Re: n.runs-SA-2007.027 - Sophos Antivirus UPX parsing Arbitrary CodeExecution Advisory


Either  Subject  "UPX  parsing Arbitrary CodeExecution" or vulnerability
description  "Infinite  Loop in UPX packed files parsing" are wrong. Can
you  provide  more  detailed  information  please?  It's  not clear, how
infinite loop can lead to remote code execution.

--Friday, August 24, 2007, 11:15:01 PM, you wrote to

snc> Description:

snc> A remotely exploitable vulnerability has been found in the file parsing
snc> engine.

snc> In detail, the following flaw was determined:

snc> - Infinite Loop in UPX packed files parsing

snc> Impact:

snc> This problem can lead to remote denial of service or arbitrary code
snc> execution if an attacker carefully crafts a file that exploits the
snc> aforementioned vulnerability. The vulnerability is present in Sophos
snc> Anti-virus software listed above on all platforms supported by the affected
snc> products prior to the engine Version 2.48.0. 


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