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Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2008:0181

The remote host is missing updates announced in
advisory RHSA-2008:0181.

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

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.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Critical

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2008-0062
BugTraq ID: 28303
Bugtraq: 20080318 MITKRB5-SA-2008-001: double-free, uninitialized data vulnerabilities in krb5kdc (Google Search)
Bugtraq: 20080319 rPSA-2008-0112-1 krb5 krb5-server krb5-services krb5-test krb5-workstation (Google Search)
Bugtraq: 20080604 VMSA-2008-0009 Updates to VMware Workstation, VMware Player, VMware ACE, VMware Fusion, VMware Server, VMware VIX API, VMware ESX, VMware ESXi resolve critical security issues (Google Search)
CERT/CC vulnerability note: VU#895609
Debian Security Information: DSA-1524 (Google Search)
HPdes Security Advisory: HPSBOV02682
HPdes Security Advisory: SSRT100495
SuSE Security Announcement: SUSE-SA:2008:016 (Google Search)
XForce ISS Database: krb5-kdc-code-execution(41275)
Common Vulnerability Exposure (CVE) ID: CVE-2008-0063
XForce ISS Database: krb5-kdc-kerberos4-info-disclosure(41277)
Common Vulnerability Exposure (CVE) ID: CVE-2008-0948
BugTraq ID: 28302
Bugtraq: 20080318 MITKRB5-SA-2008-002: array overrun in RPC library used by kadmin (resend, corrected subject) (Google Search)
Cert/CC Advisory: TA08-079B
CERT/CC vulnerability note: VU#374121
XForce ISS Database: krb5-rpclibrary-fdsetsize-bo(41274)
CopyrightCopyright (c) 2008 E-Soft Inc.

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