AUSCERT External Security Bulletin Redistribution

                 ESB-97.103 -- Sun Security Bulletin #00149
                           Vulnerability in ps

			     14 August 1997


Sun Microsystems, Inc has released the following advisory concerning a
vulnerability in ps.  This vulnerability may allow local users to gain
root privileges.  This vulnerability has been publically discussed and
reported in AUSCERT advisory AA-97.17 (Solaris 2.x ps Buffer Overflow

The following security bulletin is provided as a service to AUSCERT's
members.  As AUSCERT did not write this document, AUSCERT has had no
control over its content.  As such, the decision to use any or all of this
information is the responsibility of each user or organisation, and should
be done so in accordance with site policies and procedures.

Contact information for Sun Microsystems, Inc is included in the Security
Bulletin below.  If you have any questions or need further information,
please contact them directly.

Previous advisories and external security bulletins can be retrieved from:


If you believe that your system has been compromised, contact AUSCERT or
your representative in FIRST (Forum of Incident Response and Security

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.

- --------------------------BEGIN INCLUDED TEXT----------------------------------


 		   Sun Microsystems, Inc. Security Bulletin
Bulletin Number:	#00149
Date: 			August 12, 1997
Cross-Ref:		AUSCERT 97.17
Title:			Vulnerability in ps

Permission is granted for the redistribution of this Bulletin, so long as 
the Bulletin is not edited and is attributed to Sun Microsystems. Portions 
may also be excerpted for re-use in other security advisories so long as 
proper attribution is included.

Any other use of this information without the express written consent of 
Sun Microsystems is prohibited. Sun Microsystems expressly disclaims all 
liability for any misuse of this information by any third party.

1.  Bulletins Topics

    Sun announces the release of patches for Solaris 2.5.1, 2.5, 2.4, and 2.3 
    (SunOS 5.5.1, 5.5, 5.4, and 5.3), which relate to a vulnerability in the
    ps program.

    Sun strongly recommends that you install the patches listed in section 4 
    immediately on systems running SunOS 5.5.1, 5.5, 5.4, and 5.3. Exploit 
    information is publicly available.

2.  Who is Affected
    Vulnerable:  SunOS versions 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
                                5.4, 5.4_x86, and 5.3.

    Not vulnerable:  All other supported versions of SunOS
    The vulnerability is fixed in the upcoming release of Solaris.

3.  Understanding the Vulnerability

    The ps command prints information about active processes on a system.
    Due to insufficient bounds checking on arguments supplied to ps, it is 
    possible to overwrite the internal data space of the ps program. As ps is
    setuid root, this vulnerability may be exploited by users on a system to
    gain root access.

4.  List of Patches

    The vulnerability in ps is fixed by the following patches:

    OS version          Patch ID
    __________		________
    SunOS 5.5.1		105050-01	
    SunOS 5.5.1_x86	105051-01	
    SunOS 5.5		105052-01	
    SunOS 5.5_x86	105053-01	
    SunOS 5.4		102711-02	
    SunOS 5.4_x86	102712-02	
    SunOS 5.3		101545-03		

5.  Checksum Table

    The checksum table below shows the BSD checksums (SunOS 5.x: /usr/ucb/sum),
    SVR4 checksums (SunOS 5.x: /usr/bin/sum), and the MD5 digital signatures 
    for the above-mentioned patches that are available from:
    These checksums may not apply if you obtain patches from your answer

File Name	  BSD	      SVR4	    MD5
_______________   _________   __________   _______________________________
105050-01.tar.Z   40975 131   26675 261    9E75E08487BAAAC785735188F09BD1A
105051-01.tar.Z   34192 132   34975 264    612A6C200D9BA69087FCD3EBA6DF3B2
105052-01.tar.Z   37362 131   3540 261     41EE88EBC09B3E90E4FAEAA7E59E818
105053-01.tar.Z   38180 126   31988 252    D57C2E934BAEE887535CBDB6E88D723
102711-02.tar.Z   12693 107   22447 214    DE783A43205F1290E8CCBEA6A313EDF
102712-02.tar.Z   16617 103   32208 205    DA1C0188D437E30934182CC23A648FC
101545-03.tar.Z   46772 107   49688 214    12CF86B80340842421DD284DAC7FDB0

A.  Patches listed in this bulletin are available to all Sun customers via 
    World Wide Web at:
    Customers with Sun support contracts can also obtain patches from local 
    Sun answer centers and SunSITEs worldwide.

B.  Sun security bulletins are available via World Wide Web at:

C.  To report or inquire about a security problem with Sun software, contact 
    one or more of the following:
        - Your local Sun answer centers
        - Your representative computer security response team, such as CERT 
        - Sun Security Coordination Team. Send email to:

D.  To receive information or subscribe to our CWS (Customer Warning System) 
    mailing list, send email to:
    with a subject line (not body) containing one of the following commands:

        Command         Information Returned/Action Taken
        _______         _________________________________

        help            An explanation of how to get information
        key             Sun Security Coordination Team's PGP key
        list            A list of current security topics

        query [topic]   The email is treated as an inquiry and is forwarded to 
                        the Security Coordination Team

        report [topic]  The email is treated as a security report and is
                        forwarded to the Security Coordinaton Team. Please 
                        encrypt sensitive mail using Sun Security Coordination
                        Team's PGP key

        send topic      A short status summary or bulletin. For example, to 
                        retrieve a Security Bulletin #00138, supply the 
                        following in the subject line (not body):
                                send #138

        subscribe       Sender is added to our mailing list.  To subscribe, 
                        supply the following in the subject line (not body):

                            	subscribe cws your-email-address
                        Note that your-email-address should be substituted
                        by your email address.
        unsubscribe     Sender is removed from the CWS mailing list.

Version: 2.6.2


- -----------------------------END INCLUDED TEXT---------------------------------

Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key