67 lines
2.1 KiB
XML
67 lines
2.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200606-25">
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<title>Hashcash: Possible heap overflow</title>
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<synopsis>
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A heap overflow vulnerability in the Hashcash utility could allow an
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attacker to execute arbitrary code.
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</synopsis>
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<product type="ebuild">hashcash</product>
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<announced>June 26, 2006</announced>
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<revised>July 29, 2006: 02</revised>
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<bug>134960</bug>
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<access>remote</access>
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<affected>
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<package name="net-misc/hashcash" auto="yes" arch="*">
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<unaffected range="ge">1.21</unaffected>
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<vulnerable range="lt">1.21</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Hashcash is a utility for generating Hashcash tokens, a proof-of-work
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system to reduce the impact of spam.
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</p>
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</background>
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<description>
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<p>
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Andreas Seltenreich has reported a possible heap overflow in the
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array_push() function in hashcash.c, as a result of an incorrect amount
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of allocated memory for the "ARRAY" structure.
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</p>
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</description>
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<impact type="high">
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<p>
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By sending malicious entries to the Hashcash utility, an attacker may
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be able to cause an overflow, potentially resulting in the execution of
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arbitrary code with the privileges of the user running the application.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All Hashcash users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=net-misc/hashcash-1.21"</code>
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</resolution>
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<references>
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<uri link="http://www.hashcash.org/source/CHANGELOG">Hashcash ChangeLog</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3251">CVE-2006-3251</uri>
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</references>
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<metadata tag="requester" timestamp="Sun, 18 Jun 2006 12:26:10 +0000">
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falco
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</metadata>
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<metadata tag="submitter" timestamp="Sun, 18 Jun 2006 12:57:56 +0000">
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falco
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</metadata>
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<metadata tag="bugReady" timestamp="Fri, 23 Jun 2006 18:48:20 +0000">
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falco
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</metadata>
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</glsa>
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