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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="201612-39">
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<title>Bash: Arbitrary code execution</title>
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<synopsis>A vulnerability in Bash could potentially lead to arbitrary code
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execution.
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</synopsis>
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<product type="ebuild">bash</product>
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<announced>2016-12-13</announced>
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<revised count="2">2016-12-13</revised>
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<bug>594496</bug>
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<access>remote</access>
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<affected>
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<package name="app-shells/bash" auto="yes" arch="*">
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<unaffected range="ge">4.3_p46-r1</unaffected>
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<vulnerable range="lt">4.3_p46-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>Bash is the standard GNU Bourne Again SHell.</p>
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</background>
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<description>
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<p>A vulnerability was found in the way Bash expands $HOSTNAME. Injecting
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malicious code into $HOSTNAME could cause it to run each time Bash
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expands \h in the prompt string.
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</p>
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</description>
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<impact type="normal">
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<p>A remote attacker controlling the system’s hostname (i.e. via DHCP)
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could possibly execute arbitrary code with the privileges of the process,
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or cause a Denial of
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Service condition.
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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 Bash 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-shells/bash-4.3_p46-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-2016-0634">CVE-2016-0634</uri>
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</references>
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<metadata tag="requester" timestamp="2016-09-23T02:45:43Z">
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BlueKnight
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</metadata>
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<metadata tag="submitter" timestamp="2016-12-13T07:00:09Z">whissi</metadata>
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</glsa>
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