Hewlett Packard Information for VU#745371

Multiple vendor telnet daemons vulnerable to buffer overflow via crafted protocol options

Status

Affected

Vendor Statement

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HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0172
Originally issued: 16 October 2001
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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: Systems running telnetd may permit unauthorized remote
access.
See: http://www.cert.org/advisories/CA-2001-21.html

This vulnerability has been assigned the identifier
CAN-2001-0554 by the Common Vulnerabilities and Exposures
(CVE) group:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0554


PLATFORM: HP9000 Servers running HP-UX releases 10.X only.

DAMAGE: An intruder can potentially execute arbitrary code
with the privileges of the telnetd process.

SOLUTION: Apply the following patches to the release specified.

10.01 PHNE_24820,
10.10 PHNE_24820,
10.20 PHNE_24821,
SIS 10.20 PHNE_24822 (Telnet kerberos Patch),
10.24 PHNE_25217.

MANUAL ACTIONS: The Secure Internet Services (SIS) product, if
enabled, has to be disabled before the installation
or removal of PHNE_24822 (Telnet kerberos Patch).

AVAILABILITY: The patches are available now from http://itrc.hp.com.

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A. Background
A potential remotely exploitable buffer overflow in telnetd has
been reported to Hewlett-Packard Company. It is unique to HP-UX
releases 10.X only.

B. Fixing the problem
Disable telnetd (by commenting out the /etc/inetd.conf entry for
telnetd and running '/usr/sbin/inetd -c') if telentd is not needed
on your system.

Install the appropriate patch from the list below.

C. Recommended solution

Apply the following patches to the release specified.

10.01 PHNE_24820,
10.10 PHNE_24820,
10.20 PHNE_24821,
SIS 10.20 PHNE_24822,
10.24 PHNE_25217.

All patches are available now from http://itrc.hp.com.

D. 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.itrc.hp.com:~ftp/export/patches/hp-ux_patch_matrix

On the "Support Information Digest Main" page:
click on the "HP Security Bulletin Archive".


E. 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.
_____________________________________________________________

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References

None

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.