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<?xml version="1.0" encoding="UTF-8"?>
<glsa id="201309-21">
<title>klibc: Command Injection</title>
<synopsis>A vulnerability in klibc could allow remote attackers to execute
arbitrary shell code.
<product type="ebuild">klibc</product>
<announced>September 26, 2013</announced>
<revised>September 26, 2013: 1</revised>
<package name="dev-libs/klibc" auto="yes" arch="*">
<unaffected range="ge">1.5.25</unaffected>
<vulnerable range="lt">1.5.25</vulnerable>
<p>klibc is a minimalistic libc used for making an initramfs.</p>
<p>The ipconfig utility in klibc writes DHCP options to
/tmp/net-$DEVICE.conf, and this file is later sourced by other scripts to
get defined variables. The options written to this file are not properly
<impact type="normal">
<p>A remote attacker could send a specially crafted DHCP reply, which could
execute arbitrary shell code with the privileges of any process which
sources DHCP options.
<p>There is no known workaround at this time.</p>
<p>All klibc users should upgrade to the latest version:</p>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=dev-libs/klibc-1.5.25"
<uri link="">CVE-2011-1930</uri>
<metadata tag="requester" timestamp="Fri, 30 Aug 2013 11:18:21 +0000">
<metadata tag="submitter" timestamp="Thu, 26 Sep 2013 23:52:30 +0000">