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Red Hat Bugzilla – Attachment 901376 Details for
Bug 1103600
CVE-2014-3470 openssl: client-side denial of service when using anonymous ECDH
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[patch]
Upstream patch
openssl-CVE-2014-3470.patch (text/plain), 791 bytes, created by
Huzaifa S. Sidhpurwala
on 2014-06-02 08:31:28 UTC
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Description:
Upstream patch
Filename:
MIME Type:
Creator:
Huzaifa S. Sidhpurwala
Created:
2014-06-02 08:31:28 UTC
Size:
791 bytes
patch
obsolete
>commit 4ad43d511f6cf064c66eb4bfd0fb0919b5dd8a86 >Author: Dr. Stephen Henson <steve@openssl.org> >Date: Thu May 29 15:00:05 2014 +0100 > > Fix CVE-2014-3470 > > Check session_cert is not NULL before dereferencing it. > >diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c >index d35376d..4324f8d 100644 >--- a/ssl/s3_clnt.c >+++ b/ssl/s3_clnt.c >@@ -2511,6 +2511,13 @@ int ssl3_send_client_key_exchange(SSL *s) > int ecdh_clnt_cert = 0; > int field_size = 0; > >+ if (s->session->sess_cert == NULL) >+ { >+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); >+ SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); >+ goto err; >+ } >+ > /* Did we send out the client's > * ECDH share for use in premaster > * computation as part of client certificate?
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bug 1103600
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