Attachment 187104 Details for Bug 222952 – Document vulnerability in nss, revised

[patch] Document vulnerability in nss, revised

vuxml.patch (text/plain), 2.02 KB, created by VK on 2017-10-12 13:31:14 UTC

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Creator: VK

Created: 2017-10-12 13:31:14 UTC

Size: 2.02 KB

patch

obsolete

>Index: security/vuxml/vuln.xml
>===================================================================
>--- security/vuxml/vuln.xml	(revision 451868)
>+++ security/vuxml/vuln.xml	(working copy)
>@@ -58,6 +58,48 @@
>   * Do not forget port variants (linux-f10-libxml2, libxml2, etc.)
> -->
> <vuxml xmlns="http://www.vuxml.org/apps/vuxml-1">
>+  <vuln vid="e71fd9d3-af47-11e7-a633-009c02a2ab30">
>+    <topic>nss -- Use-after-free in TLS 1.2 generating handshake hashes</topic>
>+    <affects>
>+      <package>
>+	<name>nss</name>
>+	<range><lt>3.32.1</lt></range>
>+      </package>
>+      <package>
>+	<name>linux-c6-nss</name>
>+	<range><lt>3.32.1</lt></range>
>+      </package>
>+      <package>
>+	<name>linux-c7-nss</name>
>+	<range><lt>3.32.1</lt></range>
>+      </package>
>+    </affects>
>+    <description>
>+      <body xmlns="http://www.w3.org/1999/xhtml">
>+	<p>Mozilla reports:</p>
>+	<blockquote cite="https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7805">
>+	  <p>During TLS 1.2 exchanges, handshake hashes are generated which
>+	     point to a message buffer. This saved data is used for later
>+	     messages but in some cases, the handshake transcript can
>+	     exceed the space available in the current buffer, causing the
>+	     allocation of a new buffer. This leaves a pointer pointing to
>+	     the old, freed buffer, resulting in a use-after-free when
>+	     handshake hashes are then calculated afterwards. This can
>+	     result in a potentially exploitable crash.</p>
>+	</blockquote>
>+      </body>
>+    </description>
>+    <references>
>+      <url>https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/#CVE-2017-7805</url>
>+      <url>https://hg.mozilla.org/projects/nss/rev/2d7b65b72290</url>
>+      <cvename>CVE-2017-7805</cvename>
>+    </references>
>+    <dates>
>+      <discovery>2017-08-04</discovery>
>+      <entry>2017-10-12</entry>
>+    </dates>
>+  </vuln>
>+
>   <vuln vid="15a62f22-098a-443b-94e2-2d26c375b993">
>     <topic>osip -- Improper Restriction of Operations within the Bounds of a Memory Buffer</topic>
>     <affects>

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