Scientific Linux Security Update : krb5 on SL3.x, SL4.x, SL5.x i386/x86_64

Critical Nessus Plugin ID 60373

Synopsis

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

Description

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 Scientific 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.

SL 3x only: 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 Scientific Linux 3. (CVE-2008-0948)

SL 4x and 5x only: Multiple memory management flaws were discovered in the GSSAPI library used by MIT Kerberos. These flaws could possibly result in use of already freed memory or an attempt to free already freed memory blocks (double-free flaw), possibly causing a crash or arbitrary code execution. (CVE-2007-5901, CVE-2007-5971)

SL 5x only: Jeff Altman of Secure Endpoints discovered a flaw in the RPC library as used by MIT Kerberos kadmind server. An unauthenticated remote attacker could use this flaw to crash kadmind or possibly execute arbitrary code. 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 5. (CVE-2008-0947)

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?6d795345

Plugin Details

Severity: Critical

ID: 60373

File Name: sl_20080318_krb5_on_SL3_x.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2019/01/07

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2008/03/18

Reference Information

CVE: CVE-2007-5901, CVE-2007-5971, CVE-2008-0062, CVE-2008-0063, CVE-2008-0947, CVE-2008-0948

CWE: 119, 189, 399