MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

BID:6713

Info

MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

Bugtraq ID: 6713
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2002-0036
Remote: Yes
Local: No
Published: Jan 28 2003 12:00AM
Updated: Jul 11 2009 08:06PM
Credit: The discovery of this vulnerability has been credited to CERT.
Vulnerable: MIT Kerberos 5 1.2.4
+ 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
+ Redhat Linux 7.3 i386
 + Redhat Linux 7.3
MIT Kerberos 5 1.2.3
MIT Kerberos 5 1.2.2
+ MandrakeSoft Multi Network Firewall 2.0
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.2
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.1
+ Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 7.0
MIT Kerberos 5 1.2.1
MIT Kerberos 5 1.2
MIT Kerberos 5 1.1.1
- Redhat Linux 7.1 ia64
 - Redhat Linux 7.1 i386
 - Redhat Linux 7.1 alpha
 - Redhat Linux 7.1
- Redhat Linux 7.0 i386
 - Redhat Linux 7.0 alpha
 - Redhat Linux 7.0
+ Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Redhat Linux 6.2
Not Vulnerable: MIT Kerberos 5 1.2.7
+ Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ Redhat Linux 9.0 i386
 MIT Kerberos 5 1.2.6
MIT Kerberos 5 1.2.5
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ Mandriva Linux Mandrake 9.0
+ Redhat Linux 8.0 i386
 + Redhat Linux 8.0
+ Turbolinux Home
+ Turbolinux Turbolinux 10 F...
 + Turbolinux Turbolinux Desktop 10.0
+ Turbolinux Turbolinux Server 8.0
+ Wirex Immunix OS 7+

Discussion

MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

A vulnerability has been discovered in MIT Kerberos. It has been reported that, due to insufficient bounds checking and sanitization of user-supplied data, Kerberos is prone to memory corruption.

A remote attacker may trigger this condition my supplying a negative length value in a malicious packet sent to a target server. Successful exploitation of this issue may result in a denial of service.

As this issue affects older releases of Kerberos, a BID may already exist. If this is issue proves to be covered in a previous database entry, this BID will be retired and the correct BID will be updated accordingly.

Exploit / POC

MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

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] <mailto:[email protected]>.

Solution / Fix

MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

Solution:
Conectiva has released a security advisory (CLA-2003:639) containing fixes which address this issue. Users are advised to upgrade as soon as possible.

MIT has confirmed this vulnerability has addressed the issue in Kerberos 1.2.5 and later. Users are advised to upgrade as soon as possible.


MIT Kerberos 5 1.1.1

MIT Kerberos 5 1.2

MIT Kerberos 5 1.2.1

MIT Kerberos 5 1.2.2

MIT Kerberos 5 1.2.3

MIT Kerberos 5 1.2.4

References

MIT Kerberos ASN.1 Decoder Heap Corruption Vulnerability

References:

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