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hashcash -- format string vulnerability


A Gentoo Linux Security Advisory reports:

Tavis Ormandy of the Gentoo Linux Security Audit Team identified a flaw in the Hashcash utility that an attacker could expose by specifying a malformed reply address.

Successful exploitation would permit an attacker to disrupt Hashcash users, and potentially execute arbitrary code.



portaudit: hashcash -- format string vulnerability

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If you have found a vulnerability in a FreeBSD port not listed in the database, please contact the FreeBSD Security Officer. Refer to "FreeBSD Security Information" for more information.

Oliver Eikemeier <>