RHEL 4 / 5 : krb5 (RHSA-2007:0562)

high Nessus Plugin ID 25611
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Synopsis

The remote Red Hat 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 packages.

See Also

https://access.redhat.com/security/cve/cve-2007-2442

https://access.redhat.com/security/cve/cve-2007-2443

https://access.redhat.com/security/cve/cve-2007-2798

https://access.redhat.com/errata/RHSA-2007:0562

Plugin Details

Severity: High

ID: 25611

File Name: redhat-RHSA-2007-0562.nasl

Version: 1.34

Type: local

Agent: unix

Published: 6/27/2007

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: AV:N/AC:M/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:4, cpe:/o:redhat:enterprise_linux:4.5, 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: 6/26/2007

Vulnerability Publication Date: 6/26/2007

Reference Information

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

BID: 24653, 24655, 24657

RHSA: 2007:0562

CWE: 119