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CVE-2017-3733 Encrypt-Then-Mac renegotiation crash

HighCVSS 7.5 EPSS 12.9%
Published
Updated
Exploit status
No public exploit known

Description

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.

Affected products

ProductAffected versionsFixed in
debian/openssl(Debian:12) < 1.1.0e-1 1.1.0e-1
debian/openssl(Debian:13) < 1.1.0e-1 1.1.0e-1
debian/openssl(Debian:14) < 1.1.0e-1 1.1.0e-1
OpenSSL = 1.1.0 No fix listed
OpenSSL = 1.1.0a No fix listed
OpenSSL = 1.1.0b No fix listed
OpenSSL = 1.1.0c No fix listed
OpenSSL = 1.1.0d No fix listed
HP Inc operations agent = 11.14 No fix listed
HP Inc operations agent = 11.15 No fix listed
OpenSSL = openssl-1.1.0 No fix listed
OpenSSL = openssl-1.1.0a No fix listed
OpenSSL = openssl-1.1.0b No fix listed
OpenSSL = openssl-1.1.0c No fix listed
OpenSSL = openssl-1.1.0d No fix listed

References