Public Date:
CWE-456 -> CWE-416
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 dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

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 2009-04-07
Red Hat Enterprise Linux version 5 (krb5) RHSA-2009:0408 2009-04-07
Red Hat Enterprise Linux version 4 (krb5) RHSA-2009:0409 2009-04-07
Red Hat Enterprise Linux version 3 (krb5) RHSA-2009:0410 2009-04-07