pdp at exim
Apr 28, 2012, 2:15 AM
Post #1 of 1
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[Bug 1242] New: Exim doesn't retry OpenSSL read operations on request
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http://bugs.exim.org/show_bug.cgi?id=1242
Summary: Exim doesn't retry OpenSSL read operations on request
Product: Exim
Version: 4.77
Platform: Other
OS/Version: All
Status: NEW
Severity: bug
Priority: high
Component: TLS
AssignedTo: nigel [at] exim
ReportedBy: pdp [at] exim
CC: exim-dev [at] exim
It looks as though some recent change in OpenSSL (1.0.1 perhaps?) is causing
some TLS operations to return SSL_ERROR_WANT_READ after a renegotiation. This
exposes that Exim does not handle this operation.
See: http://www.openssl.org/docs/ssl/SSL_get_error.html
We need to handle, minimally, SSL_ERROR_WANT_READ and SSL_ERROR_WANT_WRITE
operations.
For me, with openssl s_client to test, I get a renegotiation after RCPT, every
single time, which causes Exim to drop the connection.
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