78 lines
2.6 KiB
XML
78 lines
2.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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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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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200804-16">
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<title>rsync: Execution of arbitrary code</title>
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<synopsis>
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A buffer overflow in rsync might lead to the remote execution of arbitrary
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code when extended attributes are being used.
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</synopsis>
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<product type="ebuild">rsync</product>
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<announced>April 17, 2008</announced>
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<revised>April 17, 2008: 01</revised>
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<bug>216887</bug>
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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">2.6.9-r6</unaffected>
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<vulnerable range="lt">2.6.9-r6</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 file transfer program to keep remote directories
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synchronized.
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</p>
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</background>
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<description>
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<p>
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Sebastian Krahmer of SUSE reported an integer overflow in the
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expand_item_list() function in the file util.c which might lead to a
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heap-based buffer overflow when extended attribute (xattr) support is
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enabled.
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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 send a file containing specially crafted
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extended attributes to an rsync deamon, or entice a user to sync from
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an rsync server containing specially crafted files, possibly leading to
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the execution of arbitrary code.
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</p>
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<p>
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Please note that extended attributes are only enabled when USE="acl" is
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enabled, which is the default setting.
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</p>
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</impact>
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<workaround>
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<p>
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Disable extended attributes in the rsync daemon by setting "<i>refuse
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options = xattrs</i>" in the file "/etc/rsyncd.conf" (or append
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"xattrs" to an existing "refuse" statement). When synchronizing to a
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server, do not provide the "-X" parameter to rsync. You can also
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disable the "acl" USE flag for rsync and recompile the package.
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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 rsync 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/rsync-2.6.9-r6"</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-2008-1720">CVE-2008-1720</uri>
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</references>
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<metadata tag="requester" timestamp="Mon, 14 Apr 2008 22:37:35 +0000">
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rbu
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</metadata>
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<metadata tag="submitter" timestamp="Mon, 14 Apr 2008 23:01:29 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 14 Apr 2008 23:01:42 +0000">
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rbu
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</metadata>
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</glsa>
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