Heimdal K5AdminD Remote Heap Buffer Overflow

BID:10288

Info

Heimdal K5AdminD Remote Heap Buffer Overflow

Bugtraq ID: 10288
Class: Input Validation Error
CVE: CVE-2004-0434
Remote: Yes
Local: No
Published: May 05 2004 12:00AM
Updated: Jul 12 2009 04:07AM
Credit: Discovery of this issue is credited to Evgeny Demidov <[email protected]>.
Vulnerable: KTH Heimdal 0.6.1
KTH Heimdal 0.6 .0
KTH Heimdal 0.5.3
KTH Heimdal 0.5.2
KTH Heimdal 0.5.1
+ FreeBSD FreeBSD 5.0
KTH Heimdal 0.5
- Gentoo Linux 1.4 _rc1
 - Gentoo Linux 1.2
KTH Heimdal 0.4 e
+ FreeBSD FreeBSD 4.6 -RELEASE
 + FreeBSD FreeBSD 4.6
- FreeBSD FreeBSD 4.4
- FreeBSD FreeBSD 4.3
- FreeBSD FreeBSD 4.2
- FreeBSD FreeBSD 4.1.1
- FreeBSD FreeBSD 4.1
- FreeBSD FreeBSD 4.0
+ SuSE Linux 8.0
Heimdal Heimdal 0.6.1
Heimdal Heimdal 0.6
Heimdal Heimdal 0.5.3
Heimdal Heimdal 0.5.2
Heimdal Heimdal 0.5.1
Heimdal Heimdal 0.5 .0
Debian Linux 3.0 sparc
Debian Linux 3.0 s/390
Debian Linux 3.0 ppc
Debian Linux 3.0 mipsel
Debian Linux 3.0 mips
Debian Linux 3.0 m68k
Debian Linux 3.0 ia-64
Debian Linux 3.0 ia-32
Debian Linux 3.0 hppa
Debian Linux 3.0 arm
Debian Linux 3.0 alpha
Debian Linux 3.0
Not Vulnerable:

Discussion

Heimdal K5AdminD Remote Heap Buffer Overflow

It has been reported that a remote heap overflow vulnerability exists in the k5admind daemon. This issue is due to an input validation error that fails to validate length given in the framing in kerberos 4 network communication packets.

It has been reported that this issue will only affect versions of the daemon that include Kerberos 4 support; If the daemon does not include this compatibility then it is not vulnerable.

The immediate consequences of an attacker will trigger a denial of service condition in the affected server. It might also be possible that this issue could facilitate remote code execution that would take place with the privileges of the affected daemon.

Exploit / POC

Heimdal K5AdminD Remote Heap Buffer Overflow

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] &lt;mailto:[email protected]&gt;.

Solution / Fix

Heimdal K5AdminD Remote Heap Buffer Overflow

Solution:
FreeBSD has released advisory FreeBSD-SA-04:09 and a patch dealing with this issue. Please see the referenced advisory for more information and details on obtaining the patch.

It has been reported that the latest Heimdal snapshot, available from the vendor, resolves this issue. Please see the referenced web site for the vendor for more information and details on obtaining the snapshot.

Debian has released a security advisory (DSA 504-1) dealing with this issue. Please see the referenced advisory for further information and fixes.

Gentoo has released a security advisory (GLSA 200405-23) dealing with this issue. Please see the referenced advisory for further information and fixes. Gentoo users may carry out the following commands to update their computers:

# emerge sync
# emerge -pv ">=app-crypt/heimdal-0.6.2"
# emerge ">=app-crypt/heimdal-0.6.2"


KTH Heimdal 0.4 e

References

Heimdal K5AdminD Remote Heap Buffer Overflow

References:

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