CVE Database


Impact: Critical
Public: 2009-04-07
CWE: CWE-456->CWE-416
Bugzilla: 491036: CVE-2009-0846 krb5: ASN.1 decoder can free uninitialized pointer when decoding an invalid encoding (MITKRB5-SA-2009-002)


The MITRE CVE dictionary describes this issue as:

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

Find out more about CVE-2009-0846 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 9.3
Base Metrics: AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 2.1 (krb5) RHSA-2009:0410 April 07, 2009
Red Hat Enterprise Linux version 3 (krb5) RHSA-2009:0410 April 07, 2009
Red Hat Enterprise Linux version 4 (krb5) RHSA-2009:0409 April 07, 2009
Red Hat Enterprise Linux version 5 (krb5) RHSA-2009:0408 April 07, 2009

External References

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For clarification or corrections please contact the Red Hat Security Response Team.