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TITLE:
Hashcash "From:" Format String Vulnerability

SECUNIA ADVISORY ID:
SA14487

VERIFY ADVISORY:
http://secunia.com/advisories/14487/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Hashcash 1.x
http://secunia.com/product/4743/

DESCRIPTION:
Tavis Ormandy has reported a vulnerability in Hashcash, which
potentially can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to a format string error in the
handling of the "From:" mail header. This may be exploited to execute
arbitrary code by tricking a user into replying to a mail with a
specially crafted mail address.

SOLUTION:
Do not reply to untrusted emails.

PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy, Gentoo Linux Security Audit Team.

ORIGINAL ADVISORY:
http://security.gentoo.org/glsa/glsa-200503-12.xml

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