svn commit: r547401 - head/security/vuxml
Philip Paeps
philip at FreeBSD.org
Thu Sep 3 01:00:51 UTC 2020
Author: philip
Date: Thu Sep 3 01:00:50 2020
New Revision: 547401
URL: https://svnweb.freebsd.org/changeset/ports/547401
Log:
security/vuxml: add FreeBSD SA-20:26.dhclient
Modified:
head/security/vuxml/vuln.xml
Modified: head/security/vuxml/vuln.xml
==============================================================================
--- head/security/vuxml/vuln.xml Thu Sep 3 01:00:45 2020 (r547400)
+++ head/security/vuxml/vuln.xml Thu Sep 3 01:00:50 2020 (r547401)
@@ -58,6 +58,42 @@ Notes:
* Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
-->
<vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+ <vuln vid="762b7d4a-ec19-11ea-88f8-901b0ef719ab">
+ <topic>FreeBSD -- dhclient heap overflow</topic>
+ <affects>
+ <package>
+ <name>FreeBSD</name>
+ <range><ge>12.1</ge><lt>12.1_9</lt></range>
+ <range><ge>11.4</ge><lt>11.4_3</lt></range>
+ <range><ge>11.3</ge><lt>11.3_13</lt></range>
+ </package>
+ </affects>
+ <description>
+ <body xmlns="http://www.w3.org/1999/xhtml">
+ <h1>Problem Description:</h1>
+ <p>When parsing option 119 data, dhclient(8) computes the uncompressed domain
+ list length so that it can allocate an appropriately sized buffer to store
+ the uncompressed list. The code to compute the length failed to handle
+ certain malformed input, resulting in a heap overflow when the uncompressed
+ list is copied into in inadequately sized buffer.</p>
+ <h1>Impact:</h1>
+ <p>The heap overflow could in principle be exploited to achieve remote code
+ execution. The affected process runs with reduced privileges in a Capsicum
+ sandbox, limiting the immediate impact of an exploit. However, it is
+ possible the bug could be combined with other vulnerabilities to escape the
+ sandbox.</p>
+ </body>
+ </description>
+ <references>
+ <cvename>CVE-2020-7461</cvename>
+ <freebsdsa>SA-20:26.dhclient</freebsdsa>
+ </references>
+ <dates>
+ <discovery>2020-09-02</discovery>
+ <entry>2020-09-02</entry>
+ </dates>
+ </vuln>
+
<vuln vid="77b877aa-ec18-11ea-88f8-901b0ef719ab">
<topic>FreeBSD -- SCTP socket use-after-free bug</topic>
<affects>
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