svn commit: r544261 - head/security/vuxml
Philip Paeps
philip at FreeBSD.org
Thu Aug 6 03:31:28 UTC 2020
Author: philip
Date: Thu Aug 6 03:31:27 2020
New Revision: 544261
URL: https://svnweb.freebsd.org/changeset/ports/544261
Log:
security/vuxml: add FreeBSD SA-20:23.sendmsg
Modified:
head/security/vuxml/vuln.xml
Modified: head/security/vuxml/vuln.xml
==============================================================================
--- head/security/vuxml/vuln.xml Thu Aug 6 03:31:22 2020 (r544260)
+++ head/security/vuxml/vuln.xml Thu Aug 6 03:31:27 2020 (r544261)
@@ -58,6 +58,40 @@ Notes:
* Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
-->
<vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+ <vuln vid="8db74c04-d794-11ea-88f8-901b0ef719ab">
+ <topic>FreeBSD -- sendmsg(2) privilege escalation</topic>
+ <affects>
+ <package>
+ <name>FreeBSD-kernel</name>
+ <range><ge>12.1</ge><lt>12.1_8</lt></range>
+ <range><ge>11.4</ge><lt>11.4_2</lt></range>
+ <range><ge>11.3</ge><lt>11.3_12</lt></range>
+ </package>
+ </affects>
+ <description>
+ <body xmlns="http://www.w3.org/1999/xhtml">
+ <h1>Problem Description:</h1>
+ <p>When handling a 32-bit sendmsg(2) call, the compat32 subsystem copies the
+ control message to be transmitted (if any) into kernel memory, and adjusts
+ alignment of control message headers. The code which performs this work
+ contained a time-of-check to time-of-use (TOCTOU) vulnerability which allows a
+ malicious userspace program to modify control message headers after they were
+ validated by the kernel.</p>
+ <h1>Impact:</h1>
+ <p>The TOCTOU bug can be exploited by an unprivileged malicious userspace program
+ to trigger privilege escalation.</p>
+ </body>
+ </description>
+ <references>
+ <cvename>CVE-2020-7460</cvename>
+ <freebsdsa>SA-20:23.sendmsg</freebsdsa>
+ </references>
+ <dates>
+ <discovery>2020-08-05</discovery>
+ <entry>2020-08-06</entry>
+ </dates>
+ </vuln>
+
<vuln vid="9eb01384-d793-11ea-88f8-901b0ef719ab">
<topic>FreeBSD -- Potential memory corruption in USB network device drivers</topic>
<affects>
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