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http://bugs.exim.org/show_bug.cgi?id=1445 Summary: segfaults when verify = recipient/callout without configured smtp transport Product: Exim Version: 4.82 Platform: Other OS/Version: Linux Status: NEW Severity: bug Priority: medium Component: General execution AssignedTo: [email protected] ReportedBy: [email protected] CC: [email protected] Created an attachment (id=692) --> (http://bugs.exim.org/attachment.cgi?id=692) a possible fix, to be reviewed. Hi, if the router, which is selected for callout, is not configured with an smtp transport, the callout verification leads to a segmentation fault. This happens, because in verify.c the callout setup code blindly assumes that the transport is an SMTP transport - and casts the transport block options into an options block for SMTP. This works as long as the transport options are really SMTP options. Under under conditions it may have unexpected results. To reproduce the bug use the following minimalistic configuration: -- acl_smtp_rcpt = accept verify = recipient/callout begin routers foo: driver = dnslookup transport = bar begin transports bar: driver = pipe command = true -- and swaks --pipe 'exim -C minimal.conf -bhc 8.8.8.8' -f ... -t ... (to exhibit the behaviour: the server connected for verification needs to support ESMTP) And, it's not sure that on all platforms the result is a segfault. Probably it depends on the memory layout. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
