The host_aton() buffer overflow: (1) Put a check in host_aton() itself;

[exim.git] / doc / doc-txt / ChangeLog

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index cdc3a636cc2c2998fdf0fd47b3de567b1df7e991..eff7a9d7e3ae903547fada5e71c7df4ca1d6d6ee 100644 (file)
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.56 2004/12/21 16:26:31 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.58 2004/12/29 10:16:52 ph10 Exp $
 
 Change log file for Exim from version 4.21
 -------------------------------------------
@@ -236,8 +236,8 @@ Exim version 4.50
 
 55. Some experimental protocols are using DNS PTR records for new purposes. The
     keys for these records are domain names, not reversed IP addresses. The
-    dnsdb lookup now tests whether it's key is an IP address. If not, it leaves
-    it alone. Component reversal etc. now happens only for IP addresses.
+    dnsdb PTR lookup now tests whether its key is an IP address. If not, it
+    leaves it alone. Component reversal etc. now happens only for IP addresses.
 
 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
 
@@ -247,6 +247,20 @@ Exim version 4.50
 58. The exicyclog utility now does better if the number of log files to keep
     exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
 
+59. Two changes related to the smtp_active_hostname option:
+
+      (1) $smtp_active_hostname is now available as a variable.
+      (2) The default for smtp_banner uses $smtp_active_hostname instead
+          of $primary_hostname.
+
+60. The host_aton() function is supposed to be passed a string that is known
+    to be a valid IP address. However, in the case of IPv6 addresses, it was
+    not checking this. This is a hostage to fortune. Exim now panics and dies
+    if the condition is not met. A case was found where this could be provoked
+    from a dnsdb lookup; fortuitously, this particular loophole had already
+    been fixed by change 4.50/55 above. If there are any other similar
+    loopholes, the new check should stop them being exploited.
+
 
 Exim version 4.43
 -----------------