GLSA-200503-12 : Hashcash: Format string vulnerability

High Nessus Plugin ID 17284


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200503-12 (Hashcash: Format string vulnerability)

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.
Impact :

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

There is no known workaround at this time.


All Hashcash users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/hashcash-1.16-r1'

See Also

Plugin Details

Severity: High

ID: 17284

File Name: gentoo_GLSA-200503-12.nasl

Version: $Revision: 1.13 $

Type: local

Published: 2005/03/07

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:hashcash, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2005/03/06

Vulnerability Publication Date: 2005/03/06

Reference Information

CVE: CVE-2005-0687

OSVDB: 14566

GLSA: 200503-12