changelog++

CHANGELOG.md

@@ -1,4 +1,24 @@
-## 0.6.4 (Unreleased)
+## 0.6.4 (December 16, 2016)
+
+SECURITY:
+
+Further details about these security issues can be found in the 0.6.4 upgrade
+guide.
+
+  * `default` Policy Privilege Escalation: If a parent token did not have the
+    `default` policy attached to its token, it could still create children with
+    the `default` policy. This is no longer allowed (unless the parent has
+    `sudo` capability for the creation path). In most cases this is low
+    severity since the access grants in the `default` policy are meant to be
+    access grants that are acceptable for all tokens to have.
+  * Leases Not Expired When Limited Use Token Runs Out of Uses: When using
+    limited-use tokens to create leased secrets, if the limited-use token was
+    revoked due to running out of uses (rather than due to TTL expiration or
+    explicit revocation) it would fail to revoke the leased secrets. These
+    secrets would still be revoked when their TTL expired, limiting the
+    severity of this issue. An endpoint has been added (`auth/token/tidy`) that
+    can perform housekeeping tasks on the token store; one of its tasks can
+    detect this situation and revoke the associated leases.
 
 FEATURES:
 
@@ -17,7 +37,6 @@ BUG FIXES:
  * ui (Enterprise): Submitting an unseal key now properly resets the
    form so a browser refresh isn't required to continue.
 
-
 ## 0.6.3 (December 6, 2016)
 
 DEPRECATIONS/CHANGES: