Rapid7 Vulnerability & Exploit Database

OpenSSL Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)

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OpenSSL Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
02/17/2017
Created
07/25/2018
Added
02/17/2017
Modified
10/30/2017

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.

Solution(s)

  • http-openssl-1_1_0-upgrade-1_1_0_e

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