54 lines
1.9 KiB
XML
54 lines
1.9 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="201611-19">
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<title>Tar: Extract pathname bypass</title>
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<synopsis>A path traversal attack in Tar may lead to the remote execution of
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arbitrary code.
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</synopsis>
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<product type="ebuild">tar</product>
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<announced>2016-11-22</announced>
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<revised count="2">2016-11-22</revised>
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<bug>598334</bug>
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<access>remote</access>
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<affected>
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<package name="app-arch/tar" auto="yes" arch="*">
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<unaffected range="ge">1.29-r1</unaffected>
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<vulnerable range="lt">1.29-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>The Tar program provides the ability to create and manipulate tar
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archives.
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</p>
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</background>
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<description>
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<p>Tar attempts to avoid path traversal attacks by removing offending parts
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of the element name at extract. This sanitizing leads to a vulnerability
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where the attacker can bypass the path name(s) specified on the command
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line.
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</p>
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</description>
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<impact type="normal">
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<p>The attacker can create a crafted tar archive that, if extracted by the
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victim, replaces files and directories the victim has access to in the
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target directory, regardless of the path name(s) specified on the command
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line.
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</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All Tar users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-arch/tar-1.29-r1"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6321">CVE-2016-6321</uri>
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</references>
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<metadata tag="requester" timestamp="2016-11-11T06:05:11Z">b-man</metadata>
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<metadata tag="submitter" timestamp="2016-11-22T11:59:11Z">b-man</metadata>
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</glsa>
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