Gentoo: GLSA-200503-12: Hashcash: Format string vulnerability
Summary
Gentoo Linux Security Advisory GLSA 200503-12
https://security.gentoo.org/
Severity: Normal
Title: Hashcash: Format string vulnerability
Date: March 06, 2005
Bugs: #83541
ID: 200503-12
Synopsis
=======
A format string vulnerability in the Hashcash utility could allow an
attacker to execute arbitrary code.
Background
=========
Hashcash is a utility for generating Hashcash tokens, a proof-of-work
system to reduce the impact of spam.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/hashcash < 1.16-r1 >= 1.16-r1
==========
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.
Resolution
=========
All Hashcash users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/hashcash-1.16-r1"
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/200503-12
Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org/.
License
======
Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.0/
Resolution
References
Availability
Concerns
