<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="201611-10"> <title>libuv: Privilege escalation</title> <synopsis>A vulnerability in libuv could lead to privilege escalation.</synopsis> <product type="ebuild"/> <announced>2016-11-17</announced> <revised count="1">2016-11-17</revised> <bug>540826</bug> <access>local, remote</access> <affected> <package name="dev-libs/libuv" auto="yes" arch="*"> <unaffected range="ge">1.4.2</unaffected> <vulnerable range="lt">1.4.2</vulnerable> </package> </affected> <background> <p>libuv is a multi-platform support library with a focus on asynchronous I/O. </p> </background> <description> <p>It was discovered that libuv does not call setgroups before calling setuid/setgid. If this is not called, then even though the uid has been dropped, there may still be groups associated that permit superuser privileges. </p> </description> <impact type="normal"> <p>Context-dependent attackers could escalate privileges via unspecified vectors. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All libuv users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --verbose --oneshot ">=dev-libs/libuv-1.4.2" </code> </resolution> <references> <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-0278">CVE-2015-0278</uri> </references> <metadata tag="requester" timestamp="2016-11-17T08:33:56Z">b-man</metadata> <metadata tag="submitter" timestamp="2016-11-17T10:08:59Z">b-man</metadata> </glsa>