OpenServer 5.0.6 OpenServer 5.0.7 : bind remote attacker can poison the nameserver cache
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SCO Security Advisory
Subject: OpenServer 5.0.6 OpenServer 5.0.7 : bind remote
attacker can poison the nameserver cache
Advisory number: SCOSA-2005.4
Issue date: 2005 January 20
Cross reference: sr886767 fz528463 erg712478 CAN-2003-0914
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1. Problem Description
ISC BIND 8.3.x before 8.3.7, and 8.4.x before 8.4.3, allows
remote attackers to poison the cache via a malicious name
server that returns negative responses with a large TTL
(time-to-live) value.
CERT/CC Incident Note VU#734644
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2003-0914 to this issue.
2. Vulnerable Supported Versions
System Binaries
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OpenServer 5.0.7 See the Maintenance Pack 3 Release Notes
OpenServer 5.0.6 /etc/named
/etc/named-xfer
/usr/bin/nslookup
/etc/dig
/etc/host
/etc/nsupdate
/etc/dnsquery
/etc/addr
3. Solution
The proper solution is to install the latest packages.
4. OpenServer 5.0.6
4.1 First install oss646c or later
4.2 Location of oss646c
ftp://ftp.sco.com/pub/openserver5/oss646c/
4.3 Verification of oss646c
MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8
MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f
MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814
MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e
MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84
MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109
MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6
MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4
MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486
MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a
MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2
4.4 Installation of oss646c
See ftp://ftp.sco.com/pub/openserver5/oss646c/oss646c.txt
4.5 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.4
4.6 Verification
MD5 (VOL.000.000) = f9487c1767b6454d7171b92f87d88bef
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.7 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
1) Download the VOL* files to a directory
2) Run the custom command, specify an install from media
images, and specify the directory as the location of
the images.
5. OpenServer 5.0.7
5.1 Location of Fixed Binaries
Maintenance Pack 3
http://www.sco.com/support/update/download/osr507list.html
5.2 Verification
MD5 (507mp3_vol.tar) = c927aefdd50b50aca5d29e08c1562aec
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
5.3 Installing Fixed Binaries
See the Maintenance Pack 3 Release Notes
ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.html
or
ftp://ftp.sco.com/pub/openserver5/507/mp/mp3/osr507mp3.txt
6. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0914
http://www.kb.cert.org/vuls/id/734644
SCO security resources:
http://www.sco.com/support/security/index.html
SCO security advisories via email
http://www.sco.com/support/forums/security.html
This security fix closes SCO incidents sr886767 fz528463 erg712478.
7. Disclaimer
SCO is not responsible for the misuse of any of the information
we provide on this website and/or through our security
advisories. Our advisories are a service to our customers
intended to promote secure installation and use of SCO
products.
8. Acknowledgments
SCO would like to thank CERT and The Internet Software
Consortium.
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