CVE-2012-0884

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    CVE-2012-0884

    Published: 13 Mar 2012Last Modified: 10 Apr 2026

    Summary:

    Details: The implementation of Cryptographic Message Syntax (CMS) and PKCS #7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack (MMA) adaptive chosen ciphertext attack.

    References: http://rhn.redhat.com/errata/RHSA-2012-0426.html, http://rhn.redhat.com/errata/RHSA-2012-0488.html, http://rhn.redhat.com/errata/RHSA-2012-0531.html, http://rhn.redhat.com/errata/RHSA-2012-1306.html, http://rhn.redhat.com/errata/RHSA-2012-1307.html, http://rhn.redhat.com/errata/RHSA-2012-1308.html, http://secunia.com/advisories/48580, http://secunia.com/advisories/48895, http://secunia.com/advisories/48916, http://secunia.com/advisories/57353, http://www.debian.org/security/2012/dsa-2454, http://www.openssl.org/news/secadv_20120312.txt, http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077086.html, http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077221.html, http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077666.html, http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html, http://marc.info/?l=bugtraq&m=133728068926468&w=2, http://marc.info/?l=bugtraq&m=133951357207000&w=2, http://marc.info/?l=bugtraq&m=134039053214295&w=2, http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564, http://www.kb.cert.org/vuls/id/737740, https://downloads.avaya.com/css/P8/documents/100162507, https://hermes.opensuse.org/messages/14330767

    Affected packages

    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