Oval Definition:oval:com.redhat.rhsa:def:20090408
Revision Date:2009-04-07Version:647
Title:RHSA-2009:0408: krb5 security update (Important)
Description:Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). The Generic Security Service Application Program Interface (GSS-API) definition provides security services to callers (protocols) in a generic fashion. The Simple and Protected GSS-API Negotiation (SPNEGO) mechanism is used by GSS-API peers to choose from a common set of security mechanisms.

  • An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846)

  • Multiple input validation flaws were found in the MIT Kerberos GSS-API library's implementation of the SPNEGO mechanism. A remote attacker could use these flaws to crash any network service utilizing the MIT Kerberos GSS-API library to authenticate users or, possibly, leak portions of the service's memory. (CVE-2009-0844, CVE-2009-0845)

    All krb5 users should upgrade to these updated packages, which contain backported patches to correct these issues. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
  • Family:unixClass:patch
    Status:Reference(s):CVE-2009-0844
    CVE-2009-0845
    CVE-2009-0846
    RHSA-2009:0408
    RHSA-2009:0408-01
    RHSA-2009:0408-01
    Platform(s):Red Hat Enterprise Linux 5
    Product(s):
    Definition Synopsis
  • Red Hat Enterprise Linux must be installed
  • OR Package Information
  • Red Hat Enterprise Linux 5 is installed
  • AND
  • krb5-devel is earlier than 0:1.6.1-31.el5_3.3
  • AND krb5-devel is signed with Red Hat redhatrelease2 key
  • krb5-libs is earlier than 0:1.6.1-31.el5_3.3
  • AND krb5-libs is signed with Red Hat redhatrelease2 key
  • krb5-server is earlier than 0:1.6.1-31.el5_3.3
  • AND krb5-server is signed with Red Hat redhatrelease2 key
  • krb5-workstation is earlier than 0:1.6.1-31.el5_3.3
  • AND krb5-workstation is signed with Red Hat redhatrelease2 key
  • BACK