CVE-2015-2694

    Dashboard / Vulnerabilities / CVE-2015-2694

    CVE-2015-2694

    Published: 25 May 2015Last Modified: 10 Apr 2026

    Summary:

    Details: The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

    References: http://krbdev.mit.edu/rt/Ticket/Display.html?id=8160, http://www.ubuntu.com/usn/USN-2810-1, https://github.com/krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604, http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html, http://www.securityfocus.com/bid/74824

    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