Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

BID:39556

Info

Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

Bugtraq ID: 39556
Class: Design Error
CVE: CVE-2010-1167
Remote: Yes
Local: No
Published: Apr 19 2010 12:00AM
Updated: Jun 07 2011 11:40AM
Credit: Matthias Andree
Vulnerable: Slackware Linux 10.2
Slackware Linux 10.1
Slackware Linux 10.0
Slackware Linux 9.1
Slackware Linux 9.0
Slackware Linux 8.1
Slackware Linux x86_64 -current
Slackware Linux 13.0 x86_64
Slackware Linux 13.0
Slackware Linux 12.2
Slackware Linux 12.1
Slackware Linux 12.0
Slackware Linux 11.0
Slackware Linux -current
MandrakeSoft Linux Mandrake 2010.1 x86_64
MandrakeSoft Linux Mandrake 2010.1
MandrakeSoft Linux Mandrake 2009.0 x86_64
MandrakeSoft Linux Mandrake 2009.0
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 4.0
Eric Raymond Fetchmail 6.3.16
Eric Raymond Fetchmail 6.3.13
Eric Raymond Fetchmail 6.3.12
Eric Raymond Fetchmail 6.3.11
Eric Raymond Fetchmail 6.3.10
Eric Raymond Fetchmail 6.3.9
Eric Raymond Fetchmail 6.3.8
Eric Raymond Fetchmail 6.3.7
Eric Raymond Fetchmail 6.3.6
Eric Raymond Fetchmail 6.3.5
Eric Raymond Fetchmail 6.3.4
Eric Raymond Fetchmail 6.3.3
Eric Raymond Fetchmail 6.3.2 rc4
Eric Raymond Fetchmail 6.3.2 rc3
Eric Raymond Fetchmail 6.3.2 rc2
Eric Raymond Fetchmail 6.3.2
Eric Raymond Fetchmail 6.3.1 -rc1
Eric Raymond Fetchmail 6.3.1
Eric Raymond Fetchmail 6.3 .0
Eric Raymond Fetchmail 6.3
Eric Raymond Fetchmail 6.2.9 -rc6
Eric Raymond Fetchmail 6.2.6 -pre7
Eric Raymond Fetchmail 6.2.5 .5
Eric Raymond Fetchmail 6.2.5 .4
Eric Raymond Fetchmail 6.2.5 .2
Eric Raymond Fetchmail 6.2.5 .1
Eric Raymond Fetchmail 6.2.5
Eric Raymond Fetchmail 6.2.4
Eric Raymond Fetchmail 6.2.2
Eric Raymond Fetchmail 6.2 .0
Eric Raymond Fetchmail 6.1.3
+ OpenPKG OpenPKG Current
 Eric Raymond Fetchmail 6.1 .0
+ EnGarde Secure Linux 1.0.1
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ MandrakeSoft Linux Mandrake 9.0
+ MandrakeSoft Linux Mandrake 8.2
+ MandrakeSoft Linux Mandrake 8.1
+ MandrakeSoft Linux Mandrake 8.0
+ MandrakeSoft Linux Mandrake 7.2
+ MandrakeSoft Single Network Firewall 7.2
Eric Raymond Fetchmail 6.0 .0
Eric Raymond Fetchmail 5.9.14
+ Gentoo Linux 1.4 _rc1
 + Gentoo Linux 1.2
Eric Raymond Fetchmail 5.9.13
Eric Raymond Fetchmail 5.9.12
+ Conectiva Linux 8.0
+ Conectiva Linux 7.0
+ Conectiva Linux 6.0
Eric Raymond Fetchmail 5.9.11
+ 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
 Eric Raymond Fetchmail 5.9.10
Eric Raymond Fetchmail 5.9.9
Eric Raymond Fetchmail 5.9.8
Eric Raymond Fetchmail 5.9.7
Eric Raymond Fetchmail 5.9.6
Eric Raymond Fetchmail 5.9.5
+ OpenPKG OpenPKG 1.0
Eric Raymond Fetchmail 5.9.4
Eric Raymond Fetchmail 5.9.3
Eric Raymond Fetchmail 5.9.2
Eric Raymond Fetchmail 5.9.1
Eric Raymond Fetchmail 5.9 .0
Eric Raymond Fetchmail 5.8.17
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
Eric Raymond Fetchmail 5.8.16
Eric Raymond Fetchmail 5.8.15
Eric Raymond Fetchmail 5.8.14
Eric Raymond Fetchmail 5.8.13
Eric Raymond Fetchmail 5.8.12
Eric Raymond Fetchmail 5.8.11
Eric Raymond Fetchmail 5.8.10
Eric Raymond Fetchmail 5.8.9
Eric Raymond Fetchmail 5.8.8
Eric Raymond Fetchmail 5.8.7
Eric Raymond Fetchmail 5.8.6
- Apple Mac OS X 10.1
Eric Raymond Fetchmail 5.8.5
Eric Raymond Fetchmail 5.8.4
Eric Raymond Fetchmail 5.8.3
Eric Raymond Fetchmail 5.8.2
Eric Raymond Fetchmail 5.8.1
Eric Raymond Fetchmail 5.8 .0
+ S.u.S.E. Linux 7.2
Eric Raymond Fetchmail 5.7.4
- MandrakeSoft Linux Mandrake 8.0
Eric Raymond Fetchmail 5.7.3
Eric Raymond Fetchmail 5.7.2
Eric Raymond Fetchmail 5.7.1
- Debian Linux 2.3
Eric Raymond Fetchmail 5.7
Eric Raymond Fetchmail 5.6.8
Eric Raymond Fetchmail 5.6.7
Eric Raymond Fetchmail 5.6.6
Eric Raymond Fetchmail 5.6.5
+ S.u.S.E. Linux 7.1 x86
 + S.u.S.E. Linux 7.1 sparc
 + S.u.S.E. Linux 7.1 ppc
 + S.u.S.E. Linux 7.1 alpha
 + S.u.S.E. Linux 7.1
Eric Raymond Fetchmail 5.6.4
Eric Raymond Fetchmail 5.6.3
Eric Raymond Fetchmail 5.6.2
Eric Raymond Fetchmail 5.6.1
Eric Raymond Fetchmail 5.6
Eric Raymond Fetchmail 5.5.6
Eric Raymond Fetchmail 5.5.5
- Conectiva Linux 6.0
- Conectiva Linux 5.1
- Conectiva Linux 5.0
- Conectiva Linux graficas
 - Conectiva Linux ecommerce
 Eric Raymond Fetchmail 5.5.4
Eric Raymond Fetchmail 5.5.3
Eric Raymond Fetchmail 5.5.2
Eric Raymond Fetchmail 5.5.1
Eric Raymond Fetchmail 5.5
Eric Raymond Fetchmail 5.4.5
Eric Raymond Fetchmail 5.4.4
Eric Raymond Fetchmail 5.4.3
Eric Raymond Fetchmail 5.4.2
Eric Raymond Fetchmail 5.4.1
Eric Raymond Fetchmail 5.4 .0
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ EnGarde Secure Linux 1.0.1
- Guardian Digital Engarde Secure Linux 1.0.1
Eric Raymond Fetchmail 5.3.8
Eric Raymond Fetchmail 5.3.7
Eric Raymond Fetchmail 5.3.6
Eric Raymond Fetchmail 5.3.5
Eric Raymond Fetchmail 5.3.4
Eric Raymond Fetchmail 5.3.3
Eric Raymond Fetchmail 5.3.2
Eric Raymond Fetchmail 5.3.1
- Immunix Immunix OS 6.2
Eric Raymond Fetchmail 5.3
Eric Raymond Fetchmail 5.2
Eric Raymond Fetchmail 5.1
Eric Raymond Fetchmail 5.0
- Caldera OpenLinux 2.3
- Conectiva Linux 4.2
- Conectiva Linux 4.1
- Conectiva Linux 4.0 es
 - Conectiva Linux 4.0
- SCO eServer 2.3
Eric Raymond Fetchmail 4.6.8
Eric Raymond Fetchmail 4.6.7
Eric Raymond Fetchmail 6.3.6-rc4
Eric Raymond Fetchmail 6.3.6-rc3
Eric Raymond Fetchmail 6.3.6-rc2
Eric Raymond Fetchmail 6.3.6-rc1
Eric Raymond Fetchmail 6.3.2 rc1
Not Vulnerable: Sun OpenSolaris snv_111b
Eric Raymond Fetchmail 6.3.17

Discussion

Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

Fetchmail is prone to a denial-of-service vulnerability because the application fails to handle exceptional conditions.

An attacker can exploit this issue to crash the affected application, denying service to legitimate users.

Fetchmail version 4.6.3 up to and including version 6.3.16 are vulnerable.

Exploit / POC

Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

Attackers can use a browser to exploit this issue.

Solution / Fix

Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.


Slackware Linux 12.2

MandrakeSoft Linux Mandrake 2009.0 x86_64

Slackware Linux x86_64 -current

MandrakeSoft Enterprise Server 5

Slackware Linux 13.0 x86_64

MandrakeSoft Linux Mandrake 2009.0

Slackware Linux 11.0

Slackware Linux 12.0

Slackware Linux -current

Slackware Linux 10.0

Slackware Linux 10.1

Slackware Linux 10.2

MandrakeSoft Corporate Server 4.0 x86_64

Slackware Linux 8.1

Slackware Linux 9.0

Slackware Linux 9.1

References

Fetchmail Debug Mode With Multichar Locale Remote Denial of Service Vulnerability

References:
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