svn commit: r401085 - head/security/vuxml

Mon Nov 9 08:06:57 UTC 2015

Author: mandree
Date: Mon Nov  9 08:06:55 2015
New Revision: 401085
URL: https://svnweb.freebsd.org/changeset/ports/401085

Log:
  Record PuTTY vuln' CVE-2015-5309 (Erase char handling).

Modified:
  head/security/vuxml/vuln.xml

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

--- head/security/vuxml/vuln.xml	Mon Nov  9 07:46:26 2015	(r401084)
+++ head/security/vuxml/vuln.xml	Mon Nov  9 08:06:55 2015	(r401085)
@@ -58,6 +58,46 @@ Notes:
 
 -->
 <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
+  <vuln vid="0cb0afd9-86b8-11e5-bf60-080027ef73ec">
+    <topic>PuTTY -- memory corruption in terminal emulator's erase character handling</topic>
+    <affects>
+      <package>
+	<name>putty</name>
+	<range><ge>0.54</ge><lt>0.66</lt></range>
+      </package>
+    </affects>
+    <description>
+      <body xmlns="http://www.w3.org/1999/xhtml">
+	<p>Ben Harris reports:</p>
+	<blockquote cite="http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html">
+	  <p>Versions of PuTTY and pterm between 0.54 and 0.65 inclusive have a
+	    potentially memory-corrupting integer overflow in the handling of
+	    the ECH (erase characters) control sequence in the terminal
+	    emulator.</p>
+	  <p>To exploit a vulnerability in the terminal emulator, an attacker
+	    must be able to insert a carefully crafted escape sequence into the
+	    terminal stream. For a PuTTY SSH session, this must be before
+	    encryption, so the attacker likely needs access to the server you're
+	    connecting to. For instance, an attacker on a multi-user machine
+	    that you connect to could trick you into running cat on a file they
+	    control containing a malicious escape sequence. (Unix write(1) is
+	    not a vector for this, if implemented correctly.)</p>
+	  <p>Only PuTTY, PuTTYtel, and pterm are affected; other PuTTY tools do
+	    not include the terminal emulator, so cannot be exploited this
+	    way.</p>
+	</blockquote>
+      </body>
+    </description>
+    <references>
+      <url>http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html</url>
+      <cvename>CVE-2015-5309</cvename>
+    </references>
+    <dates>
+      <discovery>2015-11-06</discovery>
+      <entry>2015-11-09</entry>
+    </dates>
+  </vuln>
+
   <vuln vid="18b3c61b-83de-11e5-905b-ac9e174be3af">
     <topic>OpenOffice 4.1.1 -- multiple vulnerabilities</topic>
     <affects>
