Heimdal TelnetD Denial Of Service Vulnerability

BID:16676

Info

Heimdal TelnetD Denial Of Service Vulnerability

Bugtraq ID: 16676
Class: Design Error
CVE: CVE-2006-0677
Remote: Yes
Local: No
Published: Feb 15 2006 12:00AM
Updated: Jan 02 2007 04:56PM
Credit: This issue was disclosed by the vendor.
Vulnerable: Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE Linux Enterprise Server 9
SuSE Linux Desktop 1.0
S.u.S.E. UnitedLinux 1.0
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
Heimdal Heimdal 0.7.1
Heimdal Heimdal 0.7
Heimdal Heimdal 0.6.5
Heimdal Heimdal 0.6.4
Heimdal Heimdal 0.6.3
+ Gentoo Linux
+ Gentoo Linux
- Ubuntu Ubuntu Linux 5.10 powerpc
- Ubuntu Ubuntu Linux 5.10 i386
- Ubuntu Ubuntu Linux 5.10 amd64
- Ubuntu Ubuntu Linux 5.0 4 powerpc
- Ubuntu Ubuntu Linux 5.0 4 i386
- Ubuntu Ubuntu Linux 5.0 4 amd64
Heimdal Heimdal 0.6.2
- Ubuntu Ubuntu Linux 4.1 ppc
- Ubuntu Ubuntu Linux 4.1 ia64
- Ubuntu Ubuntu Linux 4.1 ia32
Heimdal Heimdal 0.6.1 rc3
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
Heimdal Heimdal 0.4 e
+ 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
Heimdal Heimdal 0.4 d
Heimdal Heimdal 0.4 c
Heimdal Heimdal 0.4 b
Heimdal Heimdal 0.4 a
Heimdal Heimdal 0.3 f
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Not Vulnerable: Heimdal Heimdal 0.7.2
Heimdal Heimdal 0.6.6

Discussion

Heimdal TelnetD Denial Of Service Vulnerability

Heimdal 'telnetd' is prone to a remote denial-of-service vulnerability.

An attacker can exploit this issue to cause telnetd to crash, subsequently triggering 'inetd' to temporarily limit further telnetd requests, effectively denying service to legitimate users.

Exploit / POC

Heimdal TelnetD Denial Of Service Vulnerability

An exploit is not required.

Solution / Fix

Heimdal TelnetD Denial Of Service Vulnerability

Solution:
The vendor has released Heimdal versions 0.7.2 and 0.6.6 to address this issue.

Please see the referenced vendor announcements for further information and fixes.


Heimdal Heimdal 0.6

Heimdal Heimdal 0.6.1

Heimdal Heimdal 0.6.1 rc3

Heimdal Heimdal 0.6.2

Heimdal Heimdal 0.6.3

Heimdal Heimdal 0.6.4

Heimdal Heimdal 0.6.5

Heimdal Heimdal 0.7

Heimdal Heimdal 0.7.1

References

Heimdal TelnetD Denial Of Service Vulnerability

References:

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