Oracle Linux 4 / 5 : krb5 (ELSA-2007-0562)

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

From Red Hat Security Advisory 2007:0562 :

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.

See also :

https://oss.oracle.com/pipermail/el-errata/2007-June/000253.html
https://oss.oracle.com/pipermail/el-errata/2007-June/000251.html

Solution :

Update the affected krb5 packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 67535 ()

Bugtraq ID:

CVE ID: CVE-2007-2442
CVE-2007-2443
CVE-2007-2798