72 lines
2.6 KiB
XML
72 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="200406-07">
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<title>Subversion: Remote heap overflow</title>
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<synopsis>
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Subversion is vulnerable to a remote Denial of Service that may be
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exploitable to execute arbitrary code on the server running svnserve.
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</synopsis>
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<product type="ebuild">dev-util/subversion</product>
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<announced>June 10, 2004</announced>
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<revised>June 10, 2004: 01</revised>
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<access>remote</access>
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<affected>
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<package name="dev-util/subversion" auto="yes" arch="*">
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<unaffected range="ge">1.0.4-r1</unaffected>
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<vulnerable range="le">1.0.4</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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Subversion is a revision control system that aims to be a "compelling
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replacement for CVS". It enjoys wide use in the open source community.
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svnserve allows access to Subversion repositories using URIs with the
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svn://, svn+ssh://, and other tunelled svn+*:// protocols.
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</p>
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</background>
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<description>
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<p>
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The svn protocol parser trusts the indicated length of a URI string sent by
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a client. This allows a client to specify a very long string, thereby
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causing svnserve to allocate enough memory to hold that string. This may
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cause a Denial of Service. Alternately, given a string that causes an
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integer overflow in the variable holding the string length, the server
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might allocate less memory than required, allowing a heap overflow. This
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heap overflow may then be exploitable, allowing remote code execution. The
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attacker does not need read or write access to the Subversion repository
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being served, since even un-authenticated users can send svn protocol
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requests.
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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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Ranges from remote Denial of Service to potential arbitrary code execution
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with privileges of the svnserve process.
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</p>
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</impact>
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<workaround>
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<p>
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Servers without svnserve running are not vulnerable. Disable svnserve and
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use DAV for access instead.
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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 users should upgrade to the latest version of Subversion.
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</p>
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<code>
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# emerge sync
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# emerge -pv ">=dev-util/subversion-1.0.4-r1"
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# emerge ">=dev-util/subversion-1.0.4-r1"</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=CAN-2004-0413">CAN-2004-0413</uri>
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</references>
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<metadata tag="submitter">
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dmargoli
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</metadata>
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</glsa>
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