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78 lines
2.7 KiB
78 lines
2.7 KiB
13 years ago
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<?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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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<glsa id="200312-03">
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<title>rsync: exploitable heap overflow</title>
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<synopsis>
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rsync contains a heap overflow vulnerability that can be used to execute
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arbitrary code.
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</synopsis>
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<product type="ebuild">rsync</product>
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<announced>2003-12-04</announced>
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<revised>2003-12-04: 01</revised>
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<access>remote</access>
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<affected>
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<package name="net-misc/rsync" auto="yes" arch="*">
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<unaffected range="ge">2.5.7</unaffected>
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<vulnerable range="lt">2.5.7</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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rsync is a popular file transfer package used to synchronize the Portage
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tree.
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</p>
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</background>
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<description>
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<p>
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Rsync version 2.5.6 contains a vulnerability that can be used to run
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arbitrary code. The Gentoo infrastructure team has some reasonably good
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forensic evidence that this exploit may have been used in combination with
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the Linux kernel do_brk() vulnerability (see GLSA 200312-02) to exploit a
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rsync.gentoo.org rotation server (see GLSA-200312-01.)
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</p>
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<p>
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Please see http://lwn.net/Articles/61541/ for the security advisory released
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by the rsync development team.
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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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A remote attacker could execute arbitrary code with the permissions of the
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root user.
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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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To address this vulnerability, all Gentoo users should read GLSA-200312-02
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and ensure that all systems are upgraded to a version of the Linux kernel
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without the do_brk() vulnerability, and upgrade to version 2.5.7 of rsync:
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</p>
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<code>
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# emerge sync
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# emerge -pv '>=net-misc/rsync-2.5.7'
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# emerge '>=net-misc/rsync-2.5.7'
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# emerge clean</code>
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<p>
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Review your /etc/rsync/rsyncd.conf configuration file; ensure that the use
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chroot="no" command is commented out or removed, or change use chroot="no"
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to use chroot="yes". Then, if necessary, restart rsyncd:
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</p>
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<code>
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# /etc/init.d/rsyncd restart</code>
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</resolution>
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<references>
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<uri link="http://rsync.samba.org/#security_dec03">Rsync Security Advisory</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0962">CAN-2003-0962</uri>
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<uri link="http://security.gentoo.org/glsa/glsa-200312-02.xml">GLSA-200312-02</uri>
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<uri link="http://security.gentoo.org/glsa/glsa-200312-01.xml">GLSA-200312-01</uri>
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</references>
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</glsa>
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