CentOS 4 / 5 : krb5 (CESA-2007:0562)

High Nessus Plugin ID 25580

Synopsis

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

Description

Updated krb5 packages that fix several security flaws are now available for Red Hat Enterprise Linux 4 and 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.

David Coffey discovered an uninitialized pointer free flaw in the RPC library used by kadmind. On Red Hat Enterprise Linux 4 and 5, glibc detects attempts to free invalid pointers. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash. (CVE-2007-2442)

David Coffey also discovered an overflow flaw in the RPC library used by kadmind. On Red Hat Enterprise Linux, exploitation of this flaw is limited to a denial of service. A remote unauthenticated attacker who can access kadmind could trigger this flaw and cause kadmind to crash.
(CVE-2007-2443)

A stack-based buffer overflow flaw was found in kadmind. An authenticated attacker who can access kadmind could trigger this flaw and potentially execute arbitrary code on the Kerberos server.
(CVE-2007-2798)

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?e9b3d926

http://www.nessus.org/u?987c0fee

http://www.nessus.org/u?70b8e129

http://www.nessus.org/u?be8beaab

http://www.nessus.org/u?02a17f7c

Plugin Details

Severity: High

ID: 25580

File Name: centos_RHSA-2007-0562.nasl

Version: 1.21

Type: local

Agent: unix

Published: 2007/06/27

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: CVSS2#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:4, cpe:/o:centos:centos:5

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2007/06/27

Vulnerability Publication Date: 2007/06/26

Reference Information

CVE: CVE-2007-2442, CVE-2007-2443, CVE-2007-2798

BID: 24653, 24655, 24657

RHSA: 2007:0562

CWE: 119