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71 lines
2.4 KiB
71 lines
2.4 KiB
<?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="200512-17">
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<title>scponly: Multiple privilege escalation issues</title>
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<synopsis>
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Local users can exploit an scponly flaw to gain root privileges, and
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scponly restricted users can use another vulnerability to evade shell
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restrictions.
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</synopsis>
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<product type="ebuild">scponly</product>
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<announced>December 29, 2005</announced>
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<revised>May 22, 2006: 02</revised>
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<bug>116526</bug>
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<access>local and remote</access>
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<affected>
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<package name="net-misc/scponly" auto="yes" arch="*">
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<unaffected range="ge">4.2</unaffected>
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<vulnerable range="lt">4.2</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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scponly is a restricted shell, allowing only a few predefined commands.
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It is often used as a complement to OpenSSH to provide access to remote
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users without providing any remote execution privileges.
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</p>
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</background>
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<description>
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<p>
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Max Vozeler discovered that the scponlyc command allows users to chroot
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into arbitrary directories. Furthermore, Pekka Pessi reported that
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scponly insufficiently validates command-line parameters to a scp or
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rsync command.
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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 local attacker could gain root privileges by chrooting into arbitrary
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directories containing hardlinks to setuid programs. A remote scponly
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user could also send malicious parameters to a scp or rsync command
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that would allow to escape the shell restrictions and execute arbitrary
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programs.
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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 scponly 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/scponly-4.2"</code>
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</resolution>
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<references>
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<uri link="http://sublimation.org/scponly/index.html#relnotes">scponly release notes</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4532">CVE-2005-4532</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4533">CVE-2005-4533</uri>
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</references>
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<metadata tag="submitter" timestamp="Tue, 27 Dec 2005 09:38:39 +0000">
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koon
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</metadata>
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<metadata tag="bugReady" timestamp="Thu, 29 Dec 2005 10:10:38 +0000">
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koon
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</metadata>
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</glsa>
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