<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="201909-08"> <title>D-Bus: Authentication bypass</title> <synopsis>An authentication bypass was discovered in D-Bus.</synopsis> <product type="ebuild">dbus</product> <announced>2019-09-08</announced> <revised count="1">2019-09-08</revised> <bug>687900</bug> <access>local</access> <affected> <package name="sys-apps/dbus" auto="yes" arch="*"> <unaffected range="ge">1.12.16</unaffected> <vulnerable range="lt">1.12.16</vulnerable> </package> </affected> <background> <p>D-Bus is a message bus system which processes can use to talk to each other. </p> </background> <description> <p>It was discovered that a local attacker could manipulate symbolic links in their own home directory to bypass authentication and connect to a DBusServer with elevated privileges. </p> </description> <impact type="normal"> <p>A local attacker can bypass authentication mechanisms and elevate privileges. </p> </impact> <workaround> <p>There is no known workaround at this time.</p> </workaround> <resolution> <p>All D-Bus users should upgrade to the latest version:</p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.12.16" </code> </resolution> <references> <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-12749">CVE-2019-12749</uri> </references> <metadata tag="requester" timestamp="2019-09-07T17:12:55Z">b-man</metadata> <metadata tag="submitter" timestamp="2019-09-08T17:40:45Z">b-man</metadata> </glsa>