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    CVE-2016-7798

    The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.

    Published:Sep 19, 2016
    Last Modified:Apr 20, 2025
    EPS:Jan 30, 2017
    EPSS Score:0.00597
    CVSS Score:7.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Ruby-lang
    Product
    Openssl

    Exploits

    https://github.com/ruby/openssl/issues/49https://github.com/ruby/openssl/issues/49

    Common Weakness Enumeration

    CWE-326 Inadequate Encryption Strength

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-112 Brute Force
    CAPEC-192 Protocol Analysis
    CAPEC-20 Encryption Brute Forcing

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    References

    http://www.openwall.com/lists/oss-security/2016/09/19/9
    http://www.openwall.com/lists/oss-security/2016/09/30/6
    http://www.openwall.com/lists/oss-security/2016/10/01/2
    http://www.securityfocus.com/bid/93031
    https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062
    https://github.com/ruby/openssl/issues/49
    https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
    https://www.debian.org/security/2017/dsa-3966
    http://www.openwall.com/lists/oss-security/2016/09/19/9
    http://www.openwall.com/lists/oss-security/2016/09/30/6
    http://www.openwall.com/lists/oss-security/2016/10/01/2
    http://www.securityfocus.com/bid/93031
    https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062
    https://github.com/ruby/openssl/issues/49
    https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
    https://www.debian.org/security/2017/dsa-3966

    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