Published:
07 December 1998
Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-98.185 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9812-089
Security Vulnerability in sendmail
08 December 1998
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Hewlett Packard has released the following bulletin concerning new features
in sendmail 8.8.6 available for HP-UX to combat e-mail spamming and prevent
mail relaying exploitation.
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HP Support Information Digests
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Digest Name: Daily Security Bulletins Digest
Created: Mon Dec 7 6:34:58 PST 1998
Table of Contents:
Document ID Title
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HPSBUX9812-089 Security Vulnerability in sendmail
The documents are listed below.
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Document ID: HPSBUX9812-089
Date Loaded: 19981206
Title: Security Vulnerability in sendmail
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HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00089, 07 December 1998
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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: sendmail releases are vulnerable to mail spamming
PLATFORM: HP 9000 series 700/800.
DAMAGE: Remote users can compromise system integrity.
SOLUTION: Apply the patches below.
AVAILABILITY: All patches are available now.
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I.
A. Background
Some important features provided by 8.8.6 includes a new group
of rulesets to avoid mail "spamming" (i.e., sending of unsolicited
mail to large number of users) and to prevent mail "spammers"
from using your host as a mail relay point.
Sendmail 8.8.6 provides four new named rulesets which can be used
to check and reject abusive mail messages.
Patches are available from the Electronic Support Center (ESC)
patch hub for HP-UX 10.20, 10.30, and 11.0. An upgrade is
available for HP-UX 10.00, 10.01, and 10.10. Hewlett-Packard
recommends installing sendmail 8.8.6 for HP-UX 10.00, 10.01,
and 10.10 as an optional version upgrade. This upgrade is
not available from the Electronic Support Center (ESC) patch
hub, but from:
http://www.software.hp.com/software/HPsoftware/Sendmail/index.html
There are numerous new configuration options available and various
issues involved in upgrading to Sendmail 8.8.6. The URL above
provides additional information regarding the impact of the
upgrade.
B. Fixing the problem -
For the HP-UX releases listed below, an official patch is
available.
For HP-UX release 10.20: PHNE_12836,
HP-UX release 10.30: PHNE_12866,
HP-UX release 11.00: PHNE_15509.
NOTE: The VirtualVault product (HP-UX 10.24) is not affected.
C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP Electronic Support Center via electronic
mail, do the following:
Use your browser to get to the HP Electronic Support Center page
at:
http://us-support.external.hp.com
(for US, Canada, Asia-Pacific, & Latin-America)
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Login with your user ID and password (or register for one).
Remember to save the User ID assigned to you, and your password.
Once you are in the Main Menu:
To -subscribe- to future HP Security Bulletins,
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To -review- bulletins already released from the main Menu,
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Security Bulletin Archive".
Once in the archive there is another link 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:
us-ffs.external.hp.com
~ftp/export/patches/hp-ux_patch_matrix
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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