Mandriva Linux Security Advisory : krb5 (MDVSA-2009:098-1)
critical Nessus Plugin ID 38191
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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.Plugin Details
Severity: Critical
ID: 38191
File Name: mandriva_MDVSA-2009-098.nasl
Version: 1.17
Type: local
Family: Mandriva Local Security Checks
Published: 4/28/2009
Updated: 1/6/2021
Dependencies: ssh_get_info.nasl
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 8.7
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:ND/RL:OF/RC:C
Vulnerability Information
CPE: p-cpe:/a:mandriva:linux:ftp-client-krb5, p-cpe:/a:mandriva:linux:ftp-server-krb5, p-cpe:/a:mandriva:linux:krb5, p-cpe:/a:mandriva:linux:krb5-server, p-cpe:/a:mandriva:linux:krb5-workstation, p-cpe:/a:mandriva:linux:lib64krb53, p-cpe:/a:mandriva:linux:lib64krb53-devel, p-cpe:/a:mandriva:linux:libkrb53, p-cpe:/a:mandriva:linux:libkrb53-devel, p-cpe:/a:mandriva:linux:telnet-client-krb5, p-cpe:/a:mandriva:linux:telnet-server-krb5, cpe:/o:mandriva:linux:2008.0
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 12/8/2009
Reference Information
CVE: CVE-2009-0844, CVE-2009-0845, CVE-2009-0846, CVE-2009-0847