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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.712 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX0212-234 Security Vulnerability in smrsh 20 December 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: smrsh (Sendmail Restricted Shell) Vendor: Hewlett-Packard Operating System: HP-UX 11.00 HP-UX 11.04 HP-UX 11.11 HP-UX 11.22 Platform: HP9000 Series 700/800 Impact: Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- Document ID: HPSBUX0212-234 Date Loaded: 20021217 Title: SSRT2432 Security Vulnerability in smrsh ----------------------------------------------------------------- Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0212-234 Originally issued: 18 December 2002 SSRT2432 Security Vulnerability in smrsh ----------------------------------------------------------------- NOTICE: There are no restrictions for distribution of this Bulletin provided that it remains complete and intact. 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. ------------------------------------------------------------------ PROBLEM: Sendmail Restricted Shell (smrsh) may let local users bypass restrictions to execute code. IMPACT: The potential vulnerability may allow authorized users to execute unauthorized programs. PLATFORM: HP 9000 Series 700 and 800 running HP-UX 11.00, 11.04, 11.11, 11.22. SOLUTION: Until patches are available download and install fixed versions of /usr/sbin/smrsh from the ftp site. MANUAL ACTIONS: Yes - NonUpdate Download and install fixed versions of /usr/sbin/smrsh from the ftp site. AVAILABILITY: This bulletin will be revised when patches are available. ------------------------------------------------------------------ A. Background Sendmail Restricted Shell (smrsh) may let local users bypass restrictions to execute code. HP Tru64 UNIX is not vulnerable to this reported problem. B. Recommended solution Download the appropriate files from: System: hprc.external.hp.com (192.170.19.51) Login: smrsh Password: smrsh1 FTP Access: ftp://smrsh:smrsh1@hprc.external.hp.com/ or: ftp://smrsh:smrsh1@192.170.19.51/ Note: There is an ftp defect in IE5 that may result in a browser hang. To work around this: - Select Tools -> Internet Options -> Advanced - Un-check the option: [ ] Enable folder view for FTP sites. The files are: smrsh.1100 # 11.00 and 11.04 smrsh.1111 smrsh.1122 cksum 3401290743 20480 smrsh.1100 cksum 3416816647 16384 smrsh.1111 cksum 3349307890 16020 smrsh.1122 If you wish to verify the md5 sums please refer to: HPSBUX9408-016 Patch sums and the MD5 program MD5 (smrsh.1100) = 729434fce224e59351f8ef0d84123c3b MD5 (smrsh.1111) = bfd0585d4b11053792d202c1201ac60b MD5 (smrsh.1122) = d4e75fd3dfbc130924c2ff0e22e92d46 Copy the appropriate files to a secure directory, for example /. Then: cd /usr/sbin mv smrsh smrsh.orig cp /smsrh.1100 smrsh # 11.00 and 11.04 or cp /smsrh.1111 smrsh # 11.11 or cp /smsrh.1122 smrsh # 11.22 chmod 511 smrsh chown bin:bin smrsh C. 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://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/ On the "Support Information Digest Main" page: click on the "HP Security Bulletin Archive". 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. ------------------------------------------------------------------ (c)Copyright 2002 Hewlett-Packard Company Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of HP products referenced herein are trademarks and/or service marks of Hewlett-Packard Company. Other product and company names mentioned herein may be trademarks and/or service marks of their respective owners. ________________________________________________________________ - -----End of Document ID: HPSBUX0212-234-------------------------------------- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 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 7031 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 member emergencies only. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPgLtkyh9+71yA2DNAQGKUgP/TU2tme26IPuOgV8LzeQw+NqPpDULHIw2 n5GfC7CQUFWUR1xqUkpqxU1llbeIBY5WNGbLXXlIK5yFzFdOgMlwuNWbarKqU4ET +kXbHg75DQNYQkbn/l+G330EU5pTxOfzRuapN27qcfX0zaPXE5Fe46sJ3P5CiQSv Faf+PQrvEPA= =x3+4 -----END PGP SIGNATURE-----