svn commit: r437866 - head/security/vuxml

Thu Apr 6 13:52:55 UTC 2017

Author: junovitch
Date: Thu Apr  6 13:52:54 2017
New Revision: 437866
URL: https://svnweb.freebsd.org/changeset/ports/437866

Log:
  Document Xen Security Advisory (XSA 212)
  
  Security:	CVE-2017-7228
  Security:	https://vuxml.FreeBSD.org/freebsd/90becf7c-1acf-11e7-970f-002590263bf5.html

Modified:
  head/security/vuxml/vuln.xml

Modified: head/security/vuxml/vuln.xml
==============================================================================

--- head/security/vuxml/vuln.xml	Thu Apr  6 13:37:38 2017	(r437865)
+++ head/security/vuxml/vuln.xml	Thu Apr  6 13:52:54 2017	(r437866)
@@ -58,6 +58,37 @@ Notes:
   * Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
 -->
 <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+  <vuln vid="90becf7c-1acf-11e7-970f-002590263bf5">
+    <topic>xen-kernel -- broken check in memory_exchange() permits PV guest breakout</topic>
+    <affects>
+      <package>
+	<name>xen-kernel</name>
+	<range><lt>4.7.2_1</lt></range>
+      </package>
+    </affects>
+    <description>
+      <body xmlns="http://www.w3.org/1999/xhtml">
+	<p>The Xen Project reports:</p>
+	<blockquote cite="http://xenbits.xen.org/xsa/advisory-206.html">
+	  <p>The XSA-29 fix introduced an insufficient check on XENMEM_exchange
+	    input, allowing the caller to drive hypervisor memory accesses
+	    outside of the guest provided input/output arrays.</p>
+	  <p>A malicious or buggy 64-bit PV guest may be able to access all of
+	    system memory, allowing for all of privilege escalation, host
+	    crashes, and information leaks.</p>
+	</blockquote>
+      </body>
+    </description>
+    <references>
+      <cvename>CVE-2017-7228</cvename>
+      <url>https://xenbits.xen.org/xsa/advisory-212.html</url>
+    </references>
+    <dates>
+      <discovery>2017-04-04</discovery>
+      <entry>2017-04-06</entry>
+    </dates>
+  </vuln>
+
   <vuln vid="04f29189-1a05-11e7-bc6e-b499baebfeaf">
     <topic>cURL -- out of buffer read</topic>
     <affects>
