Published:
18 February 1997
Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-97.024 -- Hewlett Packard Advisory on ftpd/kftpd
19 February 1997
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Hewlett-Packard have released the following security bulletin giving patch
information for a vulnerability in ftpd/kftpd under HP-UX 9.x and 10.x.
This bulletin addresses the vulnerability previously described in the
AUSCERT Advisory AA-97.03 ftpd Signal Handling Vulnerability.
If you believe that your system has been compromised, contact AUSCERT or
your representative in FIRST (Forum of Incident Response and Security Teams).
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 4477
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AUSCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for emergencies.
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Document ID: HPSBUX9702-055
Date Loaded: 970219
Title: Security Vulnerability in the ftpd/kftpd executable
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HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9702-055, 19 February 1997
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The information in the following Security Advisory 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 Advisory as soon as possible.
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PROBLEM: Security Vulnerability in ftpd/kftpd
PLATFORM: HP 9000 Series 700/800s running HP-UX releases 9.X & 10.X
DAMAGE: Vulnerability may allow regular and anonymous ftp users to
access files with root privileges
SOLUTION: Apply patch:
PHNE_10008 for all platforms with HP-UX releases 9.X
PHNE_10009 for all platforms with HP-UX releases 10.0X/10.10
PHNE_10010 for all platforms with HP-UX releases 10.20
PHNE_10011 for all platforms with HP-UX releases 10.20 (kftpd)
AVAILABILITY: All patches are available now.
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I.
A. Background
A vulnerability in the ftpd and kftpd executable has been
discovered.
B. Fixing the problem
The vulnerability can be eliminated from HP-UX releases 9.X and
10.X by applying the appropriate patch.
C. Recommended solution
1. Determine which patch is appropriate for your operating
system.
2. Hewlett-Packard's HP-UX patches are available via email
and the World Wide Web
To obtain a copy of the Hewlett-Packard SupportLine email
service user's guide, send the following in the TEXT PORTION
OF THE MESSAGE to support@us.external.hp.com (no Subject
is required):
send guide
The users guide explains the HP-UX patch downloading process
via email and other services available.
World Wide Web service for downloading of patches
is available via our URL:
(http://us.external.hp.com)
3. Apply the patch to your HP-UX system.
4. Examine /tmp/update.log (9.X), or /var/adm/sw/swinstall.log
(10.X), for any relevant WARNING's or ERROR's.
D. Impact of the patch
The patches for HP-UX releases 9.X and 10.X provide enhancements
to the ppl executable to avoid this vulnerability.
E. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP SupportLine mail 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".
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.
F. To report new security vulnerabilities, send email to
security-alert@hp.com
Please encrypt 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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