INFORMATION BULLETIN
PROBLEM: In recent months, public domain sendmail developments have
uncovered several security vulnerabilities.
PLATFORM: HP-UX 9 and 10 with sendmail 8.7.5 or earlier.
DAMAGE: Allows unauthorized file access possibly gaining root
privilege.
SOLUTION: Apply patches as indicated below.
VULNERABILITY Exploit details involving this vulnerability have been made
ASSESSMENT: publicly available.
[ Start Hewlett-Packard Advisory ]
Document ID: HPSBUX9704-059
Date Loaded: 970430
Title: Sendmail patches for HP-UX releases 9.X thru 10.20
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HEWLETT-PACKARD SECURITY BULLETIN: #00059, 30 April 1997
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The information in the following Security Bulletin should be acted upon
as soon as possible. Hewlett Packard 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 vulnerabilities in HP-UX releases
PLATFORM: HP 9000 Series 700/800s running versions of HP-UX 9.X & 10.X
DAMAGE: Allows unauthorized file access.
SOLUTION: Apply the appropriate patch:
PHNE_10116 on all platforms with HPUX releases 9.X, running
sendmail version 5.65;
PHNE_10090 on all platforms with HPUX releases 10.0, 10.01,
10.10 running sendmail vers. 5.65;
PHNE_9624 on all platforms with HPUX release 10.20, running
sendmail version 8.7.1.1.
AVAILABILITY: All patches are available now.
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I.
A. Background
This bulletin addresses CERT advisories CA-95.05, CA-96.20, and
CA-96.24.
In recent months, public domain sendmail developments have
uncovered several security vulnerabilities. Hewlett-Packard has
added the required fixes into our current sendmail releases.
Prior to the new patches associated with this bulletin,
Hewlett-Packard provided the following versions of sendmail:
HP-UX 9.X through HP-UX 10.10 : sendmail 5.65
HP-UX 10.20 (as shipped) : sendmail 8.7.1.1
HP-UX 10.20 + PHNE_8702 : sendmail 8.7.5
The sendmail program is located in (/usr/{sbin,lib}/sendmail),
i.e., /usr/sbin/sendmail or /usr/lib/sendmail, depending on
your system).
B. Hewlett-Packard continues to patch the 5.65 version of sendmail on
those releases with which it originally shipped (all pre-10.20
HP-UX). Similarly, the HP-UX release 10.20 started shipping
sendmail 8.7.1.1; a companion patch PHNE_8702 brought the sendmail
program to release level 8.7.5 functionality.
Applying the 10.20 patch associated with this security bulletin
will upgrade sendmail to version 8.7.6. This sendmail release has
been found to be stable and is a patch level with which
Hewlett-Packard currently feels comfortable.
The remaining patches associated with this bulletin provide a
patched version of sendmail 5.65.
C. Recommended solution
Apply the patches appropriate to your system release level.
D. Impact of the patch
Applying the 10.20 patch associated with this security bulletin
will upgrade sendmail /usr/sbin/sendmail binary to version 8.7.6.
This sendmail release has been found to be stable and is a patch
level with which Hewlett-Packard currently feels comfortable.
The remaining patches associated with this bulletin provide a
patched version of sendmail 5.65.
E. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP SupportLine Digest service via electronic
mail, do the following:
1) From your Web browser, access the URL:
http://us-support.external.hp.com (US,Canada, Asia-Pacific,
and Latin-America)
http://europe-support.external.hp.com (Europe)
2) On the HP Electronic Support Center main screen, select
the hyperlink "Support Information Digests".
3) On the "Welcome to HP's Support Information Digests" screen,
under the heading "Register Now", select the appropriate hyperlink
"Americas and Asia-Pacific", or "Europe".
4) On the "New User Registration" screen, fill in the fields for
the User Information and Password and then select the button
labeled "Submit New User".
5) On the "User ID Assigned" screen, select the hyperlink
"Support Information Digests".
** Note what your assigned user ID and password are for future
reference.
6) You should now be on the "HP Support Information Digests Main"
screen. You might want to verify that your email address is
correct as displayed on the screen. From this screen, you may
also view/subscribe to the digests, including the security
bulletins digest.
To get a patch matrix of current HP-UX and BLS security
patches referenced by either Security Bulletin or Platform/OS,
click on following screens in order:
Technical Knowledge Database
Browse Security Bulletins
Security Bulletins Archive
HP-UX Security Patch Matrix
F. 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.
_______________________________________________________________________
[ End Hewlett-Packard Advisory ]
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