(OpenBSD Issues Fix) Re: Heimdal Kerberos 'kadmind' Buffer Overflow Lets Remote Users Execute Arbitrary Code With Root Privileges
|
|
SecurityTracker Alert ID: 1005461 |
|
SecurityTracker URL: http://securitytracker.com/id/1005461
|
|
CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
|
Date: Oct 22 2002
|
Impact:
Execution of arbitrary code via network, Root access via network
|
Fix Available: Yes Vendor Confirmed: Yes
|
Version(s): prior to 0.5.1
|
Description:
A buffer overflow vulnerability was reported in 'kadmind', the administrative access server for the Kerberos database in the Heimdal distribution. A remote user may be able to execute arbitrary code on the system with root level privileges.
It is reported that kadmind in Heimdal releases earlier than 0.5.1 has a buffer overflow in the kerberos version 4 compatibility code. If compiled with support for the Kerberos 4 kadmin protocol, kadmind is vulnerable.
A remote user can cause arbitrary code to be executed with root level privileges.
To determine if kadmind is vulnerable you can run:
# /usr/heimdal/libexec/kadmind --version
kadmind (Heimdal 0.5.1, KTH-KRB 1.2)
Copyright (c) 1999-2002 Kungliga Tekniska H gskolan
Send bug-reports to heimdal-bugs@pdc.kth.se
Non-vulnerable versions reportedly include Heimdal 0.5.1 and binaries that do *not* show a Kerberos 4 version string (KTH-KRB 1.2 in the example).
|
Impact:
A remote user can execute arbitrary code with root privileges to gain root access on the system.
|
Solution:
OpenBSD has released a source code patch for OpenBSD 3.0 and 3.1 which remedies the problem:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/033_kadmin.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/016_kadmin.patch
|
Vendor URL: www.pdc.kth.se/heimdal/ (Links to External Site)
|
Cause:
Boundary error
|
Underlying OS:
UNIX (OpenBSD)
|
|
Message History:
This archive entry is a follow-up to the message listed below.
|
Source Message Contents
|
Date: Mon, 21 Oct 2002 21:45:29 -0400
Subject: kadmind bug fix (OpenBSD)
|
# 016: SECURITY FIX: October 21, 2002
A buffer overflow can occur in the kadmind(8) daemon, leading to possible remote crash or
exploit.
A source code patch exists which remedies the problem:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/033_kadmin.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.1/common/016_kadmin.patch
(kadmind - server for administrative access to kerberos database)
|
|
