| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200611-13"> |
| <title>Avahi: "netlink" message vulnerability</title> |
| <synopsis> |
| Avahi fails to verify the origin of netlink messages, which could allow |
| local users to spoof network changes. |
| </synopsis> |
| <product type="ebuild">avahi</product> |
| <announced>November 20, 2006</announced> |
| <revised>November 20, 2006: 01</revised> |
| <bug>154322</bug> |
| <access>local</access> |
| <affected> |
| <package name="net-dns/avahi" auto="yes" arch="*"> |
| <unaffected range="ge">0.6.15</unaffected> |
| <vulnerable range="lt">0.6.15</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| Avahi is a system that facilitates service discovery on a local |
| network. |
| </p> |
| </background> |
| <description> |
| <p> |
| Avahi does not check that the netlink messages come from the kernel |
| instead of a user-space process. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| A local attacker could exploit this vulnerability by crafting malicious |
| netlink messages and trick Avahi to react to fake network changes. This |
| could lead users to connect to untrusted services without knowing. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| There is no known workaround at this time. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All Avahi users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=net-dns/avahi-0.6.15"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5461">CVE-2006-5461</uri> |
| </references> |
| <metadata tag="requester" timestamp="Thu, 16 Nov 2006 11:46:25 +0000"> |
| vorlon |
| </metadata> |
| <metadata tag="bugReady" timestamp="Thu, 16 Nov 2006 11:47:51 +0000"> |
| vorlon |
| </metadata> |
| <metadata tag="submitter" timestamp="Mon, 20 Nov 2006 08:40:32 +0000"> |
| jaervosz |
| </metadata> |
| </glsa> |