CVE-2013-4351

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    CVE-2013-4351

    Published: 10 Oct 2013Last Modified: 16 Apr 2026

    Summary:

    Details: GnuPG 1.4.x, 2.0.x, and 2.1.x treats a key flags subpacket with all bits cleared (no usage permitted) as if it has all bits set (all usage permitted), which might allow remote attackers to bypass intended cryptographic protection mechanisms by leveraging the subkey.

    References: http://rhn.redhat.com/errata/RHSA-2013-1459.html, http://www.debian.org/security/2013/dsa-2773, http://www.debian.org/security/2013/dsa-2774, https://bugzilla.redhat.com/show_bug.cgi?id=1010137, http://lists.opensuse.org/opensuse-updates/2013-10/msg00003.html, http://lists.opensuse.org/opensuse-updates/2013-10/msg00006.html, http://thread.gmane.org/gmane.comp.encryption.gpg.devel/17712/focus=18138, http://ubuntu.com/usn/usn-1987-1, http://www.openwall.com/lists/oss-security/2013/09/13/4

    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