CVE-2016-0736

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    CVE-2016-0736

    Published: 27 Jul 2017Last Modified: 8 Jul 2026

    Summary:

    Details: In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC.

    References: https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E, https://support.apple.com/HT208221, https://www.exploit-db.com/exploits/40961/, https://www.tenable.com/security/tns-2017-04, http://rhn.redhat.com/errata/RHSA-2017-1415.html, http://www.debian.org/security/2017/dsa-3796, http://www.securityfocus.com/bid/95078, http://www.securitytracker.com/id/1037508, https://access.redhat.com/errata/RHSA-2017:0906, https://access.redhat.com/errata/RHSA-2017:1161, https://access.redhat.com/errata/RHSA-2017:1413, https://access.redhat.com/errata/RHSA-2017:1414, https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03725en_us, https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-0736, https://security.gentoo.org/glsa/201701-36, https://security.netapp.com/advisory/ntap-20180423-0001/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- da5873e80d6eee7a0838793bf68f1d0254745fbb
    Fixed -None

    Affected versions

    2.4.0
    2.4.1
    2.4.10
    2.4.12
    2.4.14
    2.4.16
    2.4.19
    2.4.2
    2.4.20
    2.4.21
    2.4.22
    2.4.23
    2.4.3
    2.4.6
    2.4.7
    2.4.8
    2.4.9

    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