(SCO Issues Fix for UnixWare) BIND 8 Negative Cache Poisoning May Cause Denial of Service Conditions
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SecurityTracker Alert ID: 1008361 |
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SecurityTracker URL: http://securitytracker.com/id/1008361
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CVE Reference:
CAN-2003-0914
(Links to External Site)
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Date: Dec 2 2003
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 8.4.2 and prior versions
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Description:
A vulnerability was reported in BIND 8. A remote user can introduce invalid DNS records to cause denial of service conditions.
It is reported that a remote user can conduct a cache poisoning attack by causing the target server to retain invalid negative responses. A temporary denial of service may occur until the invalid record expires from the cache.
No further details were provided.
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Impact:
A remote user can cause denial of service conditions.
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Solution:
SCO has issued a fix for UnixWare 7.1.1. UnixWare 7.1.3 and Open UNIX 8.0.0 are reportedly not affected (as they ship with BIND 9).
UnixWare 7.1.1:
Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.33
The verification checksum is:
MD5 (erg712479.Z) = c1faea2a6a1da952e88c5123f88a2f89
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Vendor URL: isc.org/products/BIND/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
UNIX (Open UNIX-SCO)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 1 Dec 2003 15:07:01 -0800
Subject: [Full-Disclosure] UnixWare 7.1.1 : Bind: cache poisoning BIND 8 prior to 8.3.7 and BIND 8.4.x prior 8.4.2
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To: announce@lists.caldera.com bugtraq@securityfocus.com full-disclosure@lists.netsys.com
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______________________________________________________________________________
SCO Security Advisory
Subject: UnixWare 7.1.1 : Bind: cache poisoning BIND 8 prior to 8.3.7 and BIND 8.4.x prior 8.4.2
Advisory number: CSSA-2003-SCO.33
Issue date: 2003 December 01
Cross reference: sr886768 fz528464 erg712479 CAN-2003-0914
______________________________________________________________________________
1. Problem Description
UnixWare 7.1.3 is unaffected by this issue because the
version of bind included in UnixWare 7.1.3 is 9.2.1.
Open UNIX is also unaffected by this issue because the version
of bind in Open UNIX 8.0.0 is 9.1.0.
CERT/CC Incident Note VU#734644
BIND is an implementation of the Domain Name System (DNS)
protocols. Successful exploitation of this vulnerability
may result in a temporary denial of service.
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
----------------------------------------------------------------------
UnixWare 7.1.1 /usr/sbin/addr
/usr/sbin/dig
/usr/sbin/dnskeygen
/usr/sbin/dnsquery
/usr/sbin/host
/usr/sbin/in.named
/usr/sbin/irpd
/usr/sbin/mkservdb
/usr/sbin/named-bootconf
/usr/sbin/named-bootconf.pl
/usr/sbin/named-xfer
/usr/sbin/ndc
/usr/sbin/nslookup
/usr/sbin/nsupdate
3. Solution
The proper solution is to install the latest packages.
4. UnixWare 7.1.1
4.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/UnixWare/CSSA-2003-SCO.33
4.2 Verification
MD5 (erg712479.Z) = c1faea2a6a1da952e88c5123f88a2f89
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
Unknown installation method
5. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0914
SCO security resources:
http://www.sco.com/support/security/index.html
This security fix closes SCO incidents sr886768 fz528464
erg712479.
6. 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.
______________________________________________________________________________
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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html
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