Oracle Linux 5 : krb5 (ELSA-2009-0408)

Critical Nessus Plugin ID 67836

Synopsis

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

Description

From Red Hat Security Advisory 2009:0408 :

Updated krb5 packages that fix various security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important 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 using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). The Generic Security Service Application Program Interface (GSS-API) definition provides security services to callers (protocols) in a generic fashion. The Simple and Protected GSS-API Negotiation (SPNEGO) mechanism is used by GSS-API peers to choose from a common set of security mechanisms.

An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846)

Multiple input validation flaws were found in the MIT Kerberos GSS-API library's implementation of the SPNEGO mechanism. A remote attacker could use these flaws to crash any network service utilizing the MIT Kerberos GSS-API library to authenticate users or, possibly, leak portions of the service's memory. (CVE-2009-0844, CVE-2009-0845)

All krb5 users should upgrade to these updated packages, which contain backported patches to correct these issues. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.

Solution

Update the affected krb5 packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2009-April/000955.html

Plugin Details

Severity: Critical

ID: 67836

File Name: oraclelinux_ELSA-2009-0408.nasl

Version: Revision: 1.4

Type: local

Agent: unix

Published: 2013/07/12

Updated: 2016/12/07

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: p-cpe:/a:oracle:linux:krb5-devel, p-cpe:/a:oracle:linux:krb5-libs, p-cpe:/a:oracle:linux:krb5-server, p-cpe:/a:oracle:linux:krb5-workstation, cpe:/o:oracle:linux:5

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

Patch Publication Date: 2009/04/07

Reference Information

CVE: CVE-2009-0844, CVE-2009-0845, CVE-2009-0846, CVE-2009-0847

RHSA: 2009:0408

CWE: 20, 119, 189