[Bug 1071139] Re: DomainKeys Identified Mail (DKIM) Verifiers may inappropriately convey message trust

[Scott Kitterman]

** Description changed:

  See http://www.kb.cert.org/vuls/id/268267, VU#268267
  
  opendkim in squeeze, wheezy, sid offers no method to prevent use of keys
  less than 1024 bits.  This is added in the new upstream release, 2.6.8, that
  was released just for this issue.
+ 
+ [IMPACT]
+ 
+  * DKIM verifiers using opendkim will use insecure keys to produce valid
+ results.
+ 
+ [TESTCASE]
+ 
+  * The new functionality to limit key sizes is not easy to test, but is covered by
+    additions to the test suite.
+ 
+  * In order to verify this package, it needs to be installed and tested that it
+    generally works as before.
+ 
+  * Because of the specialized nature of this package, it's not possible to produce
+    a test case that just anyone can verify.
+ 
+ [Regression Potential]
+ 
+  * Regression potential is very small as the only code changes in this release are 
+    the changes to resolve this issue.
+ 
+ [Other Info]
+ 
+  * Almost all of the diff is tool related noise.  I've attached the non-noise part
+    of the diff to this bug for reference.  I think it's lower risk to just update
+    to the new release to match what upstream is doing since there are no other 
+    changes in this release.
+  
+  * The security team has reviewed this bug and said it should go via SRU and not in
+    -security since it causes a config file change.

** Changed in: opendkim (Ubuntu Quantal)
       Status: New => In Progress

** Changed in: opendkim (Ubuntu Quantal)
   Importance: Undecided => High

** Changed in: opendkim (Ubuntu Quantal)
     Assignee: (unassigned) => Scott Kitterman (kitterman)

** Changed in: opendkim (Ubuntu Quantal)
    Milestone: None => quantal-updates

** Attachment added: "Abbreviated diff"
   https://bugs.launchpad.net/ubuntu/+source/opendkim/+bug/1071139/+attachment/3415118/+files/patch2.6.7-2.6.8

** Also affects: precise-backports
   Importance: Undecided
       Status: New

** Also affects: lucid-backports
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1071139

Title:
  DomainKeys Identified Mail (DKIM) Verifiers may inappropriately convey
  message trust

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