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AUSCERT External Security Bulletin Redistribution
ESB-2001.021 -- HP Support Information Digests HPSBUX0101-136
Sec. Vulnerability in inetd(1M)
17 January 2001
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AusCERT Security Bulletin Summary
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Product: inetd
Vendor: Hewlett-Packard
Operating System: HP-UX 10.20, 10.24, 11.00, and 11.04
Platform: HP 9000
Impact: Denial of Service
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Document ID: HPSBUX0101-136
Date Loaded: 20010108
Title: Sec. Vulnerability in inetd(1M)
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HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00136, 09 Jan. '01
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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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PROBLEM: The inet server (inetd) on HP-UX can be hung by malicious
users.
PLATFORM: HP 9000 servers running HP-UX releases 10.20, 10.24, 11.00,
and 11.04.
DAMAGE: Possible Denial of Service (DoS).
SOLUTION: Install the appropriate patch as noted below:
PHNE_20747 for HP-UX release 10.20; or
PHNE_21699 for VVOS release 10.24; or
PHNE_21835 for HP-UX release 11.00; or
PHNE_23068 for VVOS release 11.04.
AVAILABILITY: The patches are available now.
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I.
A. Background
A server that uses the 'swait' state in the /etc/inetd.conf file
can be made to interfere with one or more services started by
inetd. This affects only installations where configuration
alterations have been done to include 'swait' service entries.
The standard configuration of the Internet Services product,
InternetSrvcs, provided by Hewlett-Packard, including telnetd,
ftpd, rlogind, etc., will not exhibit the behavior in question.
B. Recommended solution
The problem can be rectified by installing one of the following
patches. PHNE_20747 for HP-UX release 10.20; or
PHNE_21699 for VVOS release 10.24; or
PHNE_21835 for HP-UX release 11.00; or
PHNE_23068 for HP-UX release 11.04.
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
Under the Maintenance and Support Menu (Electronic Support
Center): click on the "more..." link. Then -
Use the 'Login' tab at the left side of the screen to login
using your ID and password. Check with your system
administrator to see if you have an existing login or use
the "Register" button at the left to create a login. You
will need to login in order to gain access to many areas of
the ITRC. Remember to save the User ID assigned to you, and
your password.
Under the Maintenance and Support Menu, click on the "more..."
link. 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 "hp security bulletins archive" near the bottom.
Once in the archive the top link is to our current Security
Patch Matrix. Updated daily, this matrix categorizes security
patches by platform/OS release, and by bulletin topic.
The security patch matrix is also available via anonymous ftp:
ftp.itrc.hp.com
~ftp/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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