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AUSCERT External Security Bulletin Redistribution
ESB-2002.450 -- HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0208-209
Sec. Vulnerability in DNS resolver libraries (rev. 1)
20 August 2002
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AusCERT Security Bulletin Summary
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Product: DNS resolver libraries
Vendor: Hewlett-Packard
Operating System: HP-UX 11.11
HP-UX 11.00
Platform: HP9000 Series 700
HP9000 Series 800
Impact: Execute Arbitrary Code/Commands
Denial of Service
Access Required: Remote
Ref: ESB-2002.424
Comment: This bulletin has been updated to include information on
Bind-8.1.2 and libnss_dns.
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**REVISED 01**
HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0208-209
Originally issued: 12 Aug 2002
Last revised: 19 Aug 2002
SSRT2316 Security Vulnerability in DNS resolver libraries
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The information in the following Security Bulletin should be
acted upon as soon as possible. Hewlett-Packard Company will
not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this
Security Bulletin as soon as possible.
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**REVISED 01**
PROBLEM: Potential buffer overflows in DNS resolver libraries.
PLATFORM: HP9000 Series 700/800 running HP-UX releases 11.00 and
11.11 (11i) with products using DNS resolver libraries,
including, but not limited to, BINDv920.INETSVCS-BIND,
- -->> Bind-8.1.2. and libnss_dns.
DAMAGE: Potential unauthorized access, denial of service.
SOLUTION: Until a product upgrade is available, download and
install the preliminary fix, BIND920ver2.depot.
- -->> Download and install the preliminary versions of
- -->> the applicable patch.
MANUAL ACTIONS: Install BIND920ver2.depot.
- -->> Install upgrade_bind812_v4.depot on 11.00.
- -->> Install preliminary patch.
AVAILABILITY: The depot is available now.
- -->> The preliminary patches are available only
- -->> from the ftp site (below) at this time.
This bulletin will be will be updated when a
product upgrade is available. This bulletin
will also be updated when solutions for
other vulnerable products are available.
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**REVISED 01**
A. Background
CERT advisory CA-2002-19 reports a buffer overflow
vulnerability which may affect products on HP-UX release
11.00 and release 11.11 (11i). The vulnerable products
include BINDv920.INETSVCS-BIND. This bulletin will be
updated when solutions for other vulnerable products are
available.
- -->> Bind-8.1.2 is vulnerable.
- -->> The libnss_dns.1 library is vulnerable.
B. Recommended solution
**REVISED 01**
- -->> The following preliminary fixes are available:
- -->> HP-UX 11.11
- -->> BIND920ver2.depot for 11.11
- -->> PHNE_25140.depot s700_800 11.11 Bind-8.1.2 patch
- -->> PHNE_26747.depot s700_800 11.11 libnss_dns
- -->> HP-UX 11.00
- -->> upgrade_bind812_v4.depot for 11.00
- -->> PHNE_27646.depot s700_800 11.00 libnss_dns
- -->>I. Until a product upgrade is available, download and install
the BIND920ver2.depot.
1. Download BIND920ver2.depot.gz from the ftp site.
This file is temporary and will be deleted when a
product upgrade is available from itrc.hp.com.
System: hprc.external.hp.com (192.170.19.51)
Login: bind
Password: bind1
FTP Access: ftp://bind:bind1@hprc.external.hp.com/
or: ftp://bind:bind1@192.170.19.51/
file: BIND920ver2.depot.gz
Note: There is an ftp defect in IE5 that may result in
a browser hang. To work around this:
- Select Tools -> Internet Options -> Advanced
- Un-check the option: [ ] Enable folder view for FTP sites
2. Copy the BIND920ver2.depot.gz file to a protected
directory and unpack it.
If you wish to verify the md5 sum please refer to:
HPSBUX9408-016
Patch sums and the MD5 program
The md5 sum for BIND920ver2.depot is:
MD5 (BIND920ver2.depot) = b5c7a1d3c18c83d015edb56da2eb0080
The cksum output is:
1311390197 20582400 BIND920ver2.depot
3. Install BIND920ver2.depot using swinstall.
**REVISED 01**
- -->>II. Until a product upgrade is available, download and install
- -->> the upgrade_bind812_v4.depot for 11.00. The instructions
- -->> for BIND920ver2.depot above apply.
- -->> file: upgrade_bind812_v4.depot.gz
- -->> MD5 (upgrade_bind812_v4.depot) =
- -->> 45edb888017394aa8a206fb8ac292a04
- -->> cksum upgrade_bind812_v4.depot
- -->> 330647597 1116160 upgrade_bind812_v4.depot
**REVISED 01**
- -->> III. Download and install the appropriate preliminary patch
- -->> from the ftp site listed above:
- -->> PHNE_27646.depot s700_800 11.00 libnss_dns DNS backend patch
- -->> PHNE_26747.depot s700_800 11.11 libnss_dns DNS backend patch
- -->> PHNE_25140.depot s700_800 11.11 Bind-8.1.2 patch
- -->> MD5 (PHNE_27646.depot) = f15f7f0dd5098b55df363007197b9fcb
- -->> cksum 891782754 61440 PHNE_27646.depot
- -->> MD5 (PHNE_27647.depot) = e110ecb2a69bd3b669f993c552e80c0c
- -->> cksum 2185197379 102400 PHNE_27647.depot
- -->> MD5 (PHNE_25140.depot) = 9c729b48c146dd636941b5a6a2e65ae1
- -->> cksum 1959995259 655360 PHNE_25140.depot
C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP IT Resource Center via electronic
mail, do the following:
Use your browser to get to the HP IT Resource Center page
at:
http://itrc.hp.com
Use the 'Login' tab at the left side of the screen to login
using your ID and password. Use your existing login or the
"Register" button at the left to create a login, in order to
gain access to many areas of the ITRC. Remember to save the
User ID assigned to you, and your password.
In the left most frame select "Maintenance and Support".
Under the "Notifications" section (near the bottom of
the page), select "Support Information Digests".
To -subscribe- to future HP Security Bulletins or other
Technical Digests, click the check box (in the left column)
for the appropriate digest and then click the "Update
Subscriptions" button at the bottom of the page.
or
To -review- bulletins already released, select the link
(in the middle column) for the appropriate digest.
To -gain access- to the Security Patch Matrix, select
the link for "The Security Bulletins Archive". (near the
bottom of the page) Once in the archive the third link is
to the current Security Patch Matrix. Updated daily, this
matrix categorizes security patches by platform/OS release,
and by bulletin topic. Security Patch Check completely
automates the process of reviewing the patch matrix for
11.XX systems.
For information on the Security Patch Check tool, see:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA"
The security patch matrix is also available via anonymous
ftp:
ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/
On the "Support Information Digest Main" page:
click on the "HP Security Bulletin Archive".
D. To report new security vulnerabilities, send email to
security-alert@hp.com
Please encrypt any exploit information using the
security-alert PGP key, available from your local key
server, or by sending a message with a -subject- (not body)
of 'get key' (no quotes) to security-alert@hp.com.
Permission is granted for copying and circulating this
Bulletin to Hewlett-Packard (HP) customers (or the Internet
community) for the purpose of alerting them to problems,
if and only if, the Bulletin is not edited or changed in
any way, is attributed to HP, and provided such reproduction
and/or distribution is performed for non-commercial purposes.
Any other use of this information is prohibited. HP is not
liable for any misuse of this information by any third party.
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