68 lines
2.2 KiB
XML
68 lines
2.2 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="200704-11">
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<title>Vixie Cron: Denial of Service</title>
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<synopsis>
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The Gentoo implementation of Vixie Cron is vulnerable to a local Denial of
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Service.
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</synopsis>
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<product type="ebuild">vixie-cron</product>
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<announced>April 16, 2007</announced>
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<revised>April 16, 2007: 01</revised>
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<bug>164466</bug>
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<access>local</access>
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<affected>
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<package name="sys-process/vixie-cron" auto="yes" arch="*">
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<unaffected range="ge">4.1-r10</unaffected>
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<vulnerable range="lt">4.1-r10</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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Vixie Cron is a command scheduler with extended syntax over cron.
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</p>
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</background>
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<description>
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<p>
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During an internal audit, Raphael Marichez of the Gentoo Linux Security
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Team found that Vixie Cron has weak permissions set on Gentoo, allowing
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for a local user to create hard links to system and users cron files,
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while a st_nlink check in database.c will generate a superfluous error.
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</p>
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</description>
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<impact type="low">
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<p>
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Depending on the partitioning scheme and the "cron" group membership, a
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malicious local user can create hard links to system or users cron
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files that will trigger the st_link safety check and prevent the
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targeted cron file from being run from the next restart or database
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reload.
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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 Vixie Cron 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 ">=sys-process/vixie-cron-4.1-r10"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1856">CVE-2007-1856</uri>
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</references>
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<metadata tag="requester" timestamp="Fri, 13 Apr 2007 15:58:28 +0000">
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jaervosz
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</metadata>
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<metadata tag="submitter" timestamp="Fri, 13 Apr 2007 21:36:24 +0000">
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falco
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 16 Apr 2007 18:10:18 +0000">
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vorlon
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</metadata>
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</glsa>
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