svn commit: r455670 - head/security/vuxml

Wed Dec 6 18:29:06 UTC 2017

Author: feld
Date: Wed Dec  6 18:29:05 2017
New Revision: 455670
URL: https://svnweb.freebsd.org/changeset/ports/455670

Log:
  Document FreeBSD-SA-17:08.ptrace

Modified:
  head/security/vuxml/vuln.xml

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

--- head/security/vuxml/vuln.xml	Wed Dec  6 18:28:00 2017	(r455669)
+++ head/security/vuxml/vuln.xml	Wed Dec  6 18:29:05 2017	(r455670)
@@ -58,6 +58,41 @@ Notes:
   * Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
 -->
 <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+  <vuln vid="34a3f9b5-dab3-11e7-b5af-a4badb2f4699">
+    <topic>FreeBSD -- Kernel data leak via ptrace(PT_LWPINFO)</topic>
+    <affects>
+      <package>
+	<name>FreeBSD-kernel</name>
+	<range><ge>11.1</ge><lt>11.1_4</lt></range>
+	<range><ge>11.0</ge><lt>11.0_15</lt></range>
+	<range><ge>10.4</ge><lt>10.4_3</lt></range>
+	<range><ge>10.3</ge><lt>10.3_24</lt></range>
+      </package>
+    </affects>
+    <description>
+      <body xmlns="http://www.w3.org/1999/xhtml">
+	<h1>Problem Description:</h1>
+	<p>Not all information in the struct ptrace_lwpinfo is
+	relevant for the state of any thread, and the kernel does
+	not fill the irrelevant bytes or short strings. Since the
+	structure filled by the kernel is allocated on the kernel
+	stack and copied to userspace, a leak of information of the
+	kernel stack of the thread is possible from the debugger.</p>
+	<h1>Impact:</h1>
+	<p>Some bytes from the kernel stack of the thread using
+	ptrace(PT_LWPINFO) call can be observed in userspace.</p>
+      </body>
+    </description>
+    <references>
+      <cvename>CVE-2017-1086</cvename>
+      <freebsdsa>SA-17:08.ptrace</freebsdsa>
+    </references>
+    <dates>
+      <discovery>2017-11-15</discovery>
+      <entry>2017-12-06</entry>
+    </dates>
+  </vuln>
+
   <vuln vid="1f8de723-dab3-11e7-b5af-a4badb2f4699">
     <topic>FreeBSD -- WPA2 protocol vulnerability</topic>
     <affects>
