CentOS 5 : krb5 (CESA-2007:0858)

critical Nessus Plugin ID 43650

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

Updated krb5 packages that fix two security flaws 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.

Tenable Network Security discovered a stack-based buffer overflow flaw in the RPC library used by kadmind. 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-2007-3999)

Garrett Wollman discovered an uninitialized pointer flaw in kadmind. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash. (CVE-2007-4000)

These issues 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 backported fixes to correct these issues.

Solution

Update the affected krb5 packages.

See Also

http://www.nessus.org/u?6cc751bc

http://www.nessus.org/u?58cc8155

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

Plugin Details

Severity: Critical

ID: 43650

File Name: centos_RHSA-2007-0858.nasl

Version: 1.21

Type: local

Agent: unix

Published: 1/6/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/4/2007

Vulnerability Publication Date: 9/5/2007

Reference Information

CVE: CVE-2007-3999, CVE-2007-4000

BID: 25534

RHSA: 2007:0858

TRA: TRA-2007-07

CWE: 20, 119, 264