CVE-2017-3733

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.

• CWE-20

• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/bid/96269Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037846
• https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_usThird Party Advisory, VDB Entry
• https://www.openssl.org/news/secadv/20170216.txtVendor Advisory
• https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/bid/96269Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037846
• https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_usThird Party Advisory, VDB Entry
• https://www.openssl.org/news/secadv/20170216.txtVendor Advisory
• https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Published

May 4, 2017

Last Modified

Jun 17, 2026

Status

Modified

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