svn commit: r556809 - head/security/vuxml
Philip Paeps
philip at FreeBSD.org
Wed Dec 2 10:03:10 UTC 2020
Author: philip
Date: Wed Dec 2 10:03:09 2020
New Revision: 556809
URL: https://svnweb.freebsd.org/changeset/ports/556809
Log:
security/vuxml: add FreeBSD SA-20:31.icmp6
Modified:
head/security/vuxml/vuln.xml
Modified: head/security/vuxml/vuln.xml
==============================================================================
--- head/security/vuxml/vuln.xml Wed Dec 2 09:25:07 2020 (r556808)
+++ head/security/vuxml/vuln.xml Wed Dec 2 10:03:09 2020 (r556809)
@@ -58,6 +58,43 @@ Notes:
* Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
-->
<vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+ <vuln vid="8eed0c5c-3482-11eb-b87a-901b0ef719ab">
+ <topic>FreeBSD -- ICMPv6 use-after-free in error message handling</topic>
+ <affects>
+ <package>
+ <name>FreeBSD-kernel</name>
+ <range><ge>12.2</ge><lt>12.2_1</lt></range>
+ <range><ge>12.1</ge><lt>12.1_11</lt></range>
+ <range><ge>11.4</ge><lt>11.4_5</lt></range>
+ </package>
+ </affects>
+ <description>
+ <body xmlns="http://www.w3.org/1999/xhtml">
+ <h1>Problem Description:</h1>
+ <p>When an ICMPv6 error message is received, the FreeBSD ICMPv6 stack
+ may extract information from the message to hand to upper-layer
+ protocols. As a part of this operation, it may parse IPv6 header
+ options from a packet embedded in the ICMPv6 message.</p>
+ <p>The handler for a routing option caches a pointer into the packet
+ buffer holding the ICMPv6 message. However, when processing
+ subsequent options the packet buffer may be freed, rendering the
+ cached pointer invalid. The network stack may later dereference the
+ pointer, potentially triggering a use-after-free.</p>
+ <h1>Impact:</h1>
+ <p>A remote host may be able to trigger a read of freed kernel memory.
+ This may trigger a kernel panic if the address had been unmapped.</p>
+ </body>
+ </description>
+ <references>
+ <cvename>CVE-2020-7469</cvename>
+ <freebsdsa>SA-20:31.icmp6</freebsdsa>
+ </references>
+ <dates>
+ <discovery>2020-12-01</discovery>
+ <entry>2020-12-02</entry>
+ </dates>
+ </vuln>
+
<vuln vid="76c8b690-340b-11eb-a2b7-54e1ad3d6335">
<topic>xorg-server -- Multiple input validation failures in X server XKB extension</topic>
<affects>
More information about the svn-ports-all
mailing list