RHEL 5 : krb5 (RHSA-2007:0892)

critical Nessus Plugin ID 26052
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VPR Score: 5.9

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated krb5 packages that correct a security flaw 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 through use of symmetric encryption and a trusted third party, the KDC. kadmind is the KADM5 administration server.

The MIT Kerberos Team discovered a problem with the originally published patch for svc_auth_gss.c (CVE-2007-3999). A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash. On Red Hat Enterprise Linux 5 it is not possible to exploit this flaw to run arbitrary code as the overflow is blocked by FORTIFY_SOURCE. (CVE-2007-4743)

This issue did not affect the versions of Kerberos distributed with Red Hat Enterprise Linux 2.1, 3, or 4.

Users of krb5-server are advised to update to these erratum packages which contain a corrected backported fix for this issue.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2007-4743

https://access.redhat.com/errata/RHSA-2007:0892

https://www.tenable.com/security/research/tra-2007-07

Plugin Details

Severity: Critical

ID: 26052

File Name: redhat-RHSA-2007-0892.nasl

Version: 1.32

Type: local

Agent: unix

Published: 9/14/2007

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:krb5-devel, p-cpe:/a:redhat:enterprise_linux:krb5-libs, p-cpe:/a:redhat:enterprise_linux:krb5-server, p-cpe:/a:redhat:enterprise_linux:krb5-workstation, cpe:/o:redhat:enterprise_linux:5

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: 9/7/2007

Vulnerability Publication Date: 9/5/2007

Reference Information

CVE: CVE-2007-3999, CVE-2007-4743

BID: 25534

RHSA: 2007:0892

TRA: TRA-2007-07

CWE: 20, 119