Mandriva Linux Security Advisory : krb5 (MDVSA-2009:098-1)

This script is Copyright (C) 2009-2016 Tenable Network Security, Inc.


Synopsis :

The remote Mandriva Linux host is missing one or more security
updates.

Description :

Multiple vulnerabilities has been found and corrected in krb5 :

The get_input_token function in the SPNEGO implementation in MIT
Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to
cause a denial of service (daemon crash) and possibly obtain sensitive
information via a crafted length value that triggers a buffer
over-read (CVE-2009-0844).

The spnego_gss_accept_sec_context function in
lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5
through 1.6.3, when SPNEGO is used, allows remote attackers to cause a
denial of service (NULL pointer dereference and daemon crash) via
invalid ContextFlags data in the reqFlags field in a negTokenInit
token (CVE-2009-0845).

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 (CVE-2009-0846).

The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka
krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a
denial of service (application crash) via a crafted length value that
triggers an erroneous malloc call, related to incorrect calculations
with pointer arithmetic (CVE-2009-0847).

The updated packages have been patched to correct these issues.

Update :

Packages for 2008.0 are provided for Corporate Desktop 2008.0
customers

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Mandriva Local Security Checks

Nessus Plugin ID: 38191 (mandriva_MDVSA-2009-098.nasl)

Bugtraq ID: 34257
34408
34409

CVE ID: CVE-2009-0844
CVE-2009-0845
CVE-2009-0846
CVE-2009-0847

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