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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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<glsa id="201701-34">
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<title>runC: Privilege escalation</title>
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<synopsis>A vulnerability in runC could lead to privilege escalation.</synopsis>
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<product type="ebuild">runc</product>
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<announced>2017-01-12</announced>
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<revised count="1">2017-01-12</revised>
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<bug>605378</bug>
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<access>remote</access>
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<affected>
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<package name="app-emulation/runc" auto="yes" arch="*">
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<unaffected range="ge">1.0.0_rc2-r2</unaffected>
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<vulnerable range="lt">1.0.0_rc2-r2</vulnerable>
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</package>
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</affected>
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<background>
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<p>RunC is a CLI tool for spawning and running containers according to the
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OCI specification.
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</p>
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</background>
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<description>
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<p>A vulnerability was discovered in runC that allows additional container
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processes via ‘runc exec’ to be ptraced by the pid 1 of the
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container. This allows the main processes of the container, if running
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as root, to gain access to file-descriptors of these new processes.
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</p>
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</description>
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<impact type="normal">
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<p>An attacker, who is able to successfully escape the container or modify
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runC’s state before process initialization, could escalate privileges.
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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 runC 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-emulation/runc-1.0.0_rc2-r2"
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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-2016-9962">CVE-2016-9962</uri>
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</references>
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<metadata tag="requester" timestamp="2017-01-12T13:07:29Z">b-man</metadata>
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<metadata tag="submitter" timestamp="2017-01-12T22:52:16Z">b-man</metadata>
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</glsa>
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