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Mandriva Linux Security Advisory : krb5 (MDVSA-2008:070)
critical Nessus Plugin ID 37527
Synopsis
The remote Mandriva Linux host is missing one or more security updates.Description
A memory management flaw was found in the GSSAPI library used by Kerberos that could result in an attempt to free already freed memory, possibly leading to a crash or allowing the execution of arbitrary code (CVE-2007-5971).A flaw was discovered in how the Kerberos krb5kdc handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly %execute arbitrary code using malformed or truncated Kerberos v4 protocol requests (CVE-2008-0062, CVE-2008-0063).
This issue only affects krb5kdc when it has Kerberos v4 protocol compatibility enabled, which is a compiled-in default in all Kerberos versions that Mandriva Linux ships prior to Mandriva Linux 2008.0.
Kerberos v4 protocol support can be disabled by adding v4_mode=none (without quotes) to the [kdcdefaults] section of /etc/kerberos/krb5kdc/kdc.conf.
A flaw in the RPC library as used in Kerberos' kadmind was discovered by Jeff Altman of Secure Endpoints. An unauthenticated remote attacker could use this vulnerability to crash kadmind or possibly execute arbitrary code in systems with certain resource limits configured;
this does not affect the default resource limits used by Mandriva Linux (CVE-2008-0947).
The updated packages have been patched to correct these issues.
Solution
Update the affected packages.See Also
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2008-001.txt
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2008-002.txt
Plugin Details
Severity: Critical
ID: 37527
File Name: mandriva_MDVSA-2008-070.nasl
Version: 1.19
Type: local
Family: Mandriva Local Security Checks
Published: 4/23/2009
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:mandriva:linux:libkrb53-devel, p-cpe:/a:mandriva:linux:ftp-client-krb5, p-cpe:/a:mandriva:linux:krb5-server, p-cpe:/a:mandriva:linux:ftp-server-krb5, p-cpe:/a:mandriva:linux:lib64krb53-devel, cpe:/o:mandriva:linux:2007, p-cpe:/a:mandriva:linux:lib64krb53, p-cpe:/a:mandriva:linux:krb5-workstation, p-cpe:/a:mandriva:linux:libkrb53, p-cpe:/a:mandriva:linux:telnet-client-krb5, p-cpe:/a:mandriva:linux:telnet-server-krb5
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list
Patch Publication Date: 3/19/2008
Reference Information
CVE: CVE-2007-5971, CVE-2008-0062, CVE-2008-0063, CVE-2008-0947