CVE-2017-3733

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    CVE-2017-3733

    Published: 4 May 2017Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: http://www.securitytracker.com/id/1037846, 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/96269, https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us, https://www.openssl.org/news/secadv/20170216.txt, https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html, https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 7ea5bd2b52d0e81eaef3d109b3b12545306f201c
    Fixed -None

    Affected versions

    1.1.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High