Detections
Analytics
RHEL 2.1 / 3 : krb5 (RHSA-2008:0181)
critical Nessus Plugin ID 31618
Synopsis
The remote Red Hat host is missing one or more security updates.Description
Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 2.1 and 3.This update has been rated as having critical security impact by the Red Hat Security Response Team.
Kerberos is a network authentication system which allows clients and servers to authenticate to each other through use of symmetric encryption and a trusted third party, the KDC.
A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (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 affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]' section of /var/kerberos/krb5kdc/kdc.conf.
A flaw was found in the RPC library used by the MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind. This issue only affected systems with certain resource limits configured and did not affect systems using default resource limits used by Red Hat Enterprise Linux 2.1 or 3. (CVE-2008-0948)
Red Hat would like to thank MIT for reporting these issues.
All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.
Solution
Update the affected packages.See Also
https://access.redhat.com/security/cve/cve-2008-0062
https://access.redhat.com/security/cve/cve-2008-0063
Plugin Details
Severity: Critical
ID: 31618
File Name: redhat-RHSA-2008-0181.nasl
Version: 1.31
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 3/19/2008
Updated: 1/14/2021
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:3, p-cpe:/a:redhat:enterprise_linux:krb5-workstation, p-cpe:/a:redhat:enterprise_linux:krb5-server, cpe:/o:redhat:enterprise_linux:2.1, p-cpe:/a:redhat:enterprise_linux:krb5-libs, p-cpe:/a:redhat:enterprise_linux:krb5-devel
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 3/18/2008
Vulnerability Publication Date: 3/18/2008
Reference Information
CVE: CVE-2008-0062, CVE-2008-0063, CVE-2008-0947, CVE-2008-0948