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************************************************************************* Security Bulletin 9431 DISA Defense Communications System December 7, 1994 Published by: DDN Security Coordination Center (SCC@NIC.DDN.MIL) 1-(800) 365-3642 DEFENSE DATA NETWORK SECURITY BULLETIN The DDN SECURITY BULLETIN is distributed by the DDN SCC (Security Coordination Center) under DISA contract as a means of communicating information on network and host security exposures, fixes, and concerns to security and management personnel at DDN facilities. Back issues may be obtained via FTP (or Kermit) from NIC.DDN.MIL [192.112.36.5] using login="anonymous" and password="guest". The bulletin pathname is scc/ddn-security-yynn (where "yy" is the year the bulletin is issued and "nn" is a bulletin number, e.g. scc/ddn-security-9428). ************************************************************************** + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + ! ! ! The following important advisory was issued by the Automated ! ! Systems Security Incident Support Team (ASSIST) and is being ! ! relayed unedited via the Defense Information Systems Agency's ! ! Security Coordination Center distribution system as a means ! ! of providing DDN subscribers with useful security information. ! ! ! + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Automated Systems Security Incident Support Team _____ ___ ___ _____ ___ _____ | / /\ / \ / \ | / \ | | / Integritas / \ \___ \___ | \___ | | < et /____\ \ \ | \ | | \ Celeritas / \ \___/ \___/ __|__ \___/ | |_____\ <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Bulletin 94-37 Release date: 6 December 1994, 10:00 AM EST (GMT -4) SUBJECT: Summary of HP Security Bulletins. SUMMARY: This bulletin contains a summary of all security related patches currently available from Hewlett Packard. The patches are presented first in a table format, then a summary of the vulnerability information is presented for each patch in the order in which the HP Bulletins were issued. BACKGROUND: HP has set up an automatic server to allow patches and other security information to be retrieved over the Internet. To utilize this server, send a message to: support@support.mayfield.hp.com. The subject line of the message will be ignored. The body (text) of the message should contain the words: send XXXX Where XXXX is the identifier for the information you want retrieved. For example, to retrieve the patch PHSS_4834, the message would be "send PHSS_4834". Other information that can be retrieved include the HP SupportLine mail service user's guide (send guide.txt), the readme file for a patch (send doc PHSS_4834), and the original HP bulletin (send doc HPSBUX9410-018). HP also has a World Wide Web server to browse and retrieve bulletins and patches. To utilize this server, use a WWW client and connect to http://support.mayfield.hp.com. IMPORTANT NOTE: Hewlett Packard updates patches periodically. These updates are not reflected in the text of each HP bulletin. The overview presented here contains current information on the patches available at the time of the release of this CIAC bulletin. If you request an updated patch, when you try to retrieve the patch you will receive a message stating that the patch is obsolete and the name of the patch which supersedes it. Hewlett Packard has made sum and MD5 checksums available for their patches and for their security bulletins. See the detailed explanation for HPSBUX9408-016 for information on how to access and utilize these checksums. IMPACT: Vulnerabilities could allow unauthorized access to HP systems. RECOMMENDED SOLUTION: Review the attached appendix and install HP appropriate patches to HP systems. ASSIST would like to thank the Department of Energy Compute Incident Advisory Capability for the information contained in this bulletin. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ASSIST is an element of the Defense Information Systems Agency (DISA), Center for Information Systems Security (CISS), that provides service to the entire DoD community. Constituents of the DoD with questions about ASSIST or computer security security issues, can contact ASSIST using one of the methods listed below. Non-DoD organizations/institutions, contact the Forum of Incident Response and Security Teams (FIRST) (FIRST) representative. To obtain a list of FIRST member organizations and their constituencies send an email to docserver@first.org with an empty "subject" line and a message body containing the line "send first-contacts". ASSIST Information Resources: To be included in the distribution list for the ASSIST bulletins, send your Milnet (Internet) e-mail address to assist-request@assist.mil. Back issues of ASSIST bulletins, and other security related information, are available from the ASSIST BBS at 703-756-7993/1154 DSN 289-7993/1154, and through anonymous FTP from assist.mil (IP address 199.211.123.11). Note: assist.mil will only accept anonymous FTP connections from Milnet addresses that are registered with the NIC or DNS. ASSIST Contact Information: PHONE: 800-357-4231 (or 703-756-7974 DSN 289), duty hours are 06:00 to 22:30 EDT (GMT -4) Monday through Friday. During off duty hours, weekends and holidays, ASSIST can be reached via pager at 800-791-4857. The page will be answered within 30 minutes, however if a quicker response is required, prefix the phone number with "999". ELECTRONIC MAIL: Send to assist@assist.mil. ASSIST BBS: Leave a message for the "sysop". Privacy Enhanced Mail (PEM): ASSIST uses PEM, a public key encryption tool, to digitally sign all bulletins that are distributed through e-mail. The section of seemingly random characters between the "BEGIN PRIVACY-ENHANCED MESSAGE" and "BEGIN ASSIST BULLETIN" contains machine-readable digital signature information generated by PEM, not corrupted data. PEM software for UNIX systems is available from Trusted Information Systems (TIS) at no cost, and can be obtained via anonymous FTP from ftp.tis.com (IP 192.94.214.96). Note: The TIS software is just one of several implementations of PEM currently available and additional versions are likely to be offered from other sources in the near future. Reference herein to any specific commercial product, process, or service by trade name, trademark manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favoring by ASSIST. The views and opinions of authors expressed herein shall not be used for advertising or product endorsement purposes. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Appendix: Table of HP Security Bulletins HP Progs Patches to Overview of Bulletin Affected Platform Install Vulnerability - -------- -------- ---------------- -------------- ------------- 9311-001 sendmail HP 9000 300,400, 1 of 4 patches A mail message 700,800 dependent on can cause HP-UX 8.x, 9.x configuration system commands to be executed 9312-002 Xterm HP 9000 300,400, 1 of 5 patches The logging 700,800 dependent on function of HP-UX 8.x, 9.x configuration xterm allows local users to create or modify files 9402-003 /etc/ HP 9000 300,400, 1 of 2 patches /etc/ subnetconfig 700,800 dependent on subnetconfig HP-UX 9.0/9.1 configuration can allow users to increase their privileges 9402-004 /dev/nit HP 9000 300,400, Evaluate Be aware of 700,800 necessity of vulnerabilities HP-UX Apollo having the inherent in the Token Ring machine on a nature of a or network machine STREAMS-DLPI 9402-005 hpterm HP 9000 300,400, 1 or 2 patches Users can gain 700,800 dependent on access to files hpterm Revision configuration; regardless of 2.89 or earlier or use hpterm file ownership Rev 2.90/higher and permissions 9402-006 HP DCE HP 9000 700,800 1 patch Unauthorized Camera at revision 9.x root access 9404-007 Advisory none none Announcement only that HP is not vulnerable to the SITE EXEC problem 9404-008 HP Vue HP 9000 300,400, 1 of 2 patches Unauthorized 3.0 700,800 dependent on root access HP-UX 9.x configuration 9405-009 OSF/AES HP 9000 700 Install 2 Root grants standard HP-UX 9.01 patches improper or 9.03 ownership of files and directories 9405-010 ftpd All HP-UX root should Anonymous users home directory systems own ftp home can change directory permissions on files 9405-011 HP HP 9000 300/400, 1 patch or Non-root users GlancePlus 700/800 update product can use glance rev B.09.00 for HP-UX 9.x or gpm to gain and earlier or use root privs workaround in HP-UX 8.x 9405-012 HP 9000 700 at change file files were SUID Multimedia HP-UX rev 9.x permissions on Sharedprint three files 9406-013 HP 9000 300,400 1 of 2 patches Unauthorized /usr/etc/vhe 700,800 dependent on root access /vhe_u_mnt HP-UX 8.x, 9.x configuration 9406-014 All HP-UX systems Script for Patch files may Permissions patches have become of patches obtained corrupted installed before before June 21, 1994 6/21/94 9407-015 HP 9000 700 Install 1 Unauthorized Xauthority patch access to the display 9408-016 Advisory All HP-UX none HP patch 9408-000 only systems checksums and HP security bulletin checksums 9409-017 System HP 9000 700,800 Install Users can Message HP-UX 8.x, 9.x appropriate increase their catalog patch(es) privileges (fileset dependent upon CORE-DIAG) configuration 9410-018 xwcreate HP 9000 300,400, Install 1 Files not owned and gwind 700,800 patch by a user can HP-UX 8.x, 9.x be removed by non-root users * All HP-UX bulletins have the prefix HPSBUX, for example bulletin 9311-001 would be requested from HP as HPSBUX9311-001. Appendix II: Details of each HP Bulletin After every patch is installed, be sure to examine /tmp/update.log for any relevant WARNINGs or ERRORs. This can be done by typing "tail -60 /tmp/update.log | more", then paging through the next three screens via the space bar, looking for WARNING or ERROR messages. ================================================== HPSBUX9311-001: Sendmail, dated November 12, 1993 The patch to install depends on which operating system version and series you are currently using. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch System HP-UX 8.x 300/400 PHNE_3995 HP-UX 9.x 300/400 PHNE_3996 HP-UX 8.x 700/800 PHNE_3371 HP-UX 9.x 700/800 PHNE_4533 No patches will be available for releases of HP-UX prior to 8.0. If you are running a version prior to 8.0, modify the sendmail configuration file /usr/lib/sendmail.cf to disable the "prog" mailer function. Directions are found in HP Bulletin HPSBUX9311-001. To apply the sendmail patch: a. Follow the installation instructions included with the patch. The update process kills the running sendmail, replaces the /usr/lib/sendmail binary, and starts the new sendmail. If you do not have a frozen configuration file (/usr/lib/sendmail.fc), skip steps b, c, and d. If you do use a frozen configuration file, continue with step b. b. Kill the running sendmail by typing: "/usr/lib/sendmail -bk" c. Freeze the configuration file by typing: "/etc/freeze" d. Restart the sendmail daemon by typing: "/usr/lib/sendmail -bd - -q30m" ================================================== HPSBUX9312-002: Xterm, dated November 30, 1993 (revised December 1, 1993) The patch to install depends on which operating system version and series you are currently using. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch System HP-UX 9.x 700/800 PHSS_4866 HP-UX 8.x 700 PHSS_3538 HP-UX 8.x 800 PHSS_4218 HP-UX 9.x 300/400 PHSS_4219 HP-UX 8.x 300/400 PHSS_4216 No patches will be available for releases of HP-UX prior to 8.0. If you are running a version prior to 8.0, a workaround can be accomplished by removing the setuid permissions from xterm. This workaround introduces other problems, however, and the main recommendation is that the system be upgraded to a supported version of the operating system. To install the patch, retrieve the patch and apply it per the installation instructions included with the patch. ================================================== HPSBUX9402-003: /etc/subnetconfig, dated February 7, 1994 The patch to install depends on which operating system version and series you are currently using. The vulnerability only exists in HP-UX version 9.0 and 9.01 and has been fixed in 9.03. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch System HP-UX 9.0, 9.01 700/800 PHNE_3564 HP-UX 9.0 300/400 PHNE_3563 To install the patch, retrieve the patch and apply it per the installation instructions included with the patch. ================================================== HPSBUX9402-004: /dev/nit, dated February 10, 1994 This bulletin did not announce a patch, but noted a vulnerability inherent in networked machines. The following was taken directly from HPSBUX9402-004: Essentially, the security vulnerability lies in ANY HP SYSTEM THAT MAKES NETWORK CONNECTIONS across networks where hosts exist that have an intruder who has gained root access and is using a network monitoring tool on a promiscuous mode of a lan interface. The intruder can then gain information about the HP systems which are using the network for a connection. HP supports the promiscuous mode on two products: Apollo Token Ring and STREAMS- DLPI. These programs allow a root user to access the promiscuous mode and can therefore be used by an INTRUDER WHO HAS ALREADY GAINED ROOT ACCESS on the HP system, to learn about OTHER systems which are using the network. Systems with the Apollo Token Ring and STREAMS-DLPI are NO MORE VULNERABLE than any other systems; they just allow intruders that have already cracked the system, by some other means, to EXTEND the intrusion to other systems using the attached network. ================================================== HPSBUX9402-005: hpterm, dated February 22, 1994 The patch to install depends on which operating system and series you are currently using. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch(es) System HP-UX 9.X 700/800 PHSS_4685 PHSS_4865 HP-UX 9.X 300/400 PHSS_4527 PHSS_4517 HP-UX 8.X 700 PHSS_4525 HP-UX 8.X 800 PHSS_4526 HP-UX 8.X 300/400 PHSS_4524 ================================================== HPSBUX9402-006: HP DCE/9000 Camera, dated February 24, 1994 The vulnerability exists only in the Camera component of HP DCE/9000, in versions 1.1 and 1.2 of HP DCE/9000 and the associated HP DCE Developers' Environment used with HP-UX version 9.X. Obtain patch PHSS_3820, install it per the installation instructions included with the patch. ================================================== HPSBUX9404-007: Advisory on ftpd SITE EXEC, dated April 22, 1994 HP distributed this Advisory to inform their users that their product line was and is NOT vulnerable to a certain security vulnerability within the UNIX operating system. ================================================== HPSBUX9404-008: HP Vue 3.0 dated April 19, 1994 The patch to install depends on which operating system version and series you are currently using. The vulnerability only exists in HP-UX version 9.X. CIAC issued CIAC Bulletin E-23 on this vulnerability. Use the following chart to determine which patch to retrieve and install in /tmp: Series Apply patch 700/800 PHSS_4865 300/400 PHSS_4517 To install the patch, retrieve the patch and apply it per the installation instructions included with the patch. Note that this patch is the same patch as in HP Bulletin HPSBUX9402-005 above. Only one installation of this patch is necessary. ================================================== HPSBUX9405-009: OSF/AES standard, dated May 5, 1994 The vulnerability only exists on HP 9000 series 700 computers running HP-UX 9.01 or 9.03. Initially, the program cpio had been patched to work around the problem. Since this bulletin announces patches that remedy the problem, the workaround to cpio will be superseded via the installation of this cpio patch. Patch name Operating Series Apply patch(es) System OSF/AES patch HP-UX 9.01 700 PHKL_4942 OSF/AES patch HP-UX 9.03, 9.05 700 PHKL_4943 cpio patch HP-UX 9.X 700 PHCO_3533 Obtain necessary patches, install per the installation instructions included with the patches. ================================================== HPSBUX9405-010: ftpd race condition and ftpd home directory, dated May 4, 1994 This Advisory was distributed by HP to address a security issue with ftpd which was pertinent to many versions of UNIX. HP distributed this Advisory to inform their users that their product line was and is NOT vulnerable to a certain security vulnerability within ftpd involving a race condition. Secondly, HPSBUX9405-010 addressed an ftpd configuration problem. This issue is that the man page regarding ftpd recommends an insecure configuration for the permissions on the ftp home directory. The correct recommendation is that the ftp home directory should be owned by root. ================================================== HPSBUX9405-011: HP GlancePlus, dated May 4, 1994 This vulnerability exists in product executables on all versions of HP-UX for HP GlancePlus product revision B.09.00 and earlier for series 700/800 systems and in the /usr/perf/bin/glance program up to and including revision A.09.06 for series 300/400 systems. The GlancePlus version can be determined on 9.X systems by using the "what" command. The fix is to update to the next version of GlancePlus, which is version B.09.01 on series 700/800 computers and A.09.07 on series 300/400 machines. No patch will be available for HP-UX 8.X. If you have an 8.X system, the workaround is to change the permissions to 744 for the files /usr/bin/ruxux/glance. ================================================== HPSBUX9405-012: Multimedia Sharedprint, dated May 4, 1994 The vulnerability only exists on HP 9000 series 700 computers running HP-UX 9.X. To fix the problem perform the following three commands as root: chmod 544 /usr/imaging/pcl/util/update_pcl_fonts chmod 544 /usr/imaging/pcl/util/ssmak chmod 544 /usr/imaging/pcl/util/ixmak ================================================== HPSBUX9406-013: /usr/etc/vhe/vhe_u_mnt, dated June 21, 1994 (Revised July 5, 1994) The patch to install depends on which operating system version and series you are currently using. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch System HP-UX 8.x, 9.x 700/800 PHNE_4434 HP-UX 8.x, 9.x 300/400 PHNE_4363 Obtain necessary patches, install per the installation instructions included with the patches. ================================================== HPSBUX9406-014: Patch permissions, dated July 5, 1994 This bulletin describes file permission problems with patches retrieved and installed prior to the date of this bulletin. The permissions to these patches were set to vulnerable values. All patches from June 21, 1994 on will have the correct file permission values. If you have retrieved and installed patches prior to the date of HP Bulletin HPSBUX9406-014, then HP recommends that all patch directories in /system should be examined. This process can be simplified by retrieving HP Bulletin HPSBUX9406-014 and executing the three scripts supplied with that bulletin. If you are retrieving patches after June 21, 1994, the patches have all had their permissions set correctly, and no action need to be taken in response to this bulletin. ================================================== HPSBUX9407-015: Xauthority problem, dated July 13, 1994 The vulnerability only exists in HP 9000 series 700 computers, using HP-UX version 9.X. Under certain conditions Xauthority will not be enabled, which can allow users logged into the X server's system to access the display without providing the Xauthority code. Obtain patch PHSS_4820 and install it per the installation instructions included with the patch. ================================================== HPSBUX9408-016: Patch Checksums dated August 29, 1994, and HPSBUX9408-000: dated August 31, 1994 (Revised October 12, 1994) HPSBUX9408-016 was the first HP advisory to announce the availability of checksum s for all previous HP patches, whether or not the patches relate to security vulnerabilities. HPSBUX9408-016 also contains source to the MD5 checksum utility, as well as a script entitled check_patch which performs the checking of patches. As more patches were released, HP decided to include the checksums for the HP security bulletins; these bulletin checksums are contained in HPSBUX9408-000. To obtain the MD5 program, following these steps: 1. Obtain HP Advisory HPSBUX9408-016 from HP by using the information contained on the first page of this CIAC Bulletin. 2. Extract the MD5 shar file from HPSBUX9408-016 and place it into the file md5.shar. 3. Unpack the source by typing sh md5.shar 4, Make and test the md5 program by typing make test. You will see the following output: cc -c -O -DMD=5 md5c.c cc -c -O -DMD=5 mddriver.c cc -o md5 md5c.o mddriver.o ./md5 -x | diff - test.rfc > diffs 2>&1 *** MD5 Test Passed rm -f diffs 5. Extract the check_patch script from HPSBUX9408-016. This script unpacks a patch, computes the sums, and finds any matches in the hp-ux_patch_sums file. The script assumes that the patch and the hp-ux_patch_sums file are both in the working directory. It also assumes that md5 is installed and can be reached via $PATH. There are three ways to retrieve the current list of checksums for the patches themselves. They can be retrieved via WWW by connecting to HP's WWW server at http://support.mayfield.hp.com. To receive the list by email, send the words "send hp-ux_patch_sums" in the text portion of the message to support@support.mayfield.hp.com. This is the same method used as in the first page of this CIAC bulletin. The third, quickest method of retrieving the current list of checksums is to retrieve them via FTP from support.mayfield.hp.com (IP address 192.6.148.1) from the file ~/export/patches/hp-ux_patch_sums. Note that this is NOT available via ANONYMOUS FTP. Detailed directions for FTP access and self- registration of an account on support.mayfield.hp.com are included in HPSBUX9408-016. ================================================== HPSBUX9409-017: CORE-DIAG vulnerability, dated September 21, 1994 (Revised October 18, 1994) This vulnerability can allow a user to increase their access privileges. The vulnerability exists for all HP-UX systems using the CORE-DIAG fileset. No patches will be available for versions of HP_UX prior to version 8.0. The patch to install depends on which operating system version and series you are currently using. To determine the operating system version of your system, display the file /system/UX-CORE/index with the "more" or "pr" command. The line will look similar to: fv: A.BX.YY.ZZ Where X is the major revision, YY is the minor revision, and ZZ is the PCO index. For example, if your system needed to install the last item on the chart below, (HP-UX 9.04.1k) the major revision would be "9", the minor revision would be "04" and the PCO index would be "1K". Note that these patches are quite large. Use the following chart to determine which patch to retrieve and install in /tmp: Operating System Series Apply patch HP-UX 8.05, 8.07 700 PHSS_4574 HP-UX 9.01 700 PHSS_4475 HP-UX 9.03, 9.05 700 PHSS_4863 HP-UX 8.0, 8.06 800 PHSS_4578 HP-UX 8.02 800 PHSS_4577 HP-UX 9.00.2O or 9.00.3A 800 PHSS_4532 HP-UX 9.00.4A 800 PHSS_4660 HP-UX 9.04.1K or 9.04.2A 800 PHSS_4749 Obtain necessary patches, install per the installation instructions included with the patches. ================================================== HPSBUX9410-018: xwcreate and gwind, dated October 12, 1994 The program /usr/bin/X11/xwcreate is used to create X windows and devices files for raw-mode Starbase applications to display into. The xwcreate program invokes /usr/bin/X11/gwind which creates the device file. It is possible that existing files not owned by the user may be removed by using this software. The patch to install depends on which operating system version and series you are currently using. Use the following chart to determine which patch to retrieve and install in /tmp: Operating Series Apply patch System HP-UX 9.x 700/800 PHSS_4832 HP-UX 8.x 700 PHSS_4834 HP-UX 8.x 800 PHSS_4835 HP-UX 9.x 300/400 PHSS_4833 HP-UX 8.x 300/400 PHSS_4836 Obtain necessary patches, install per the installation instructions included with the patches. **************************************************************************** * * * The point of contact for MILNET security-related incidents is the * * Security Coordination Center (SCC). * * * * E-mail address: SCC@NIC.DDN.MIL * * * * Telephone: 1-(800)-365-3642 * * * * NIC Help Desk personnel are available from 7:00 a.m.-7:00 p.m. EST, * * Monday through Friday except on federal holidays. * * * **************************************************************************** PLEASE NOTE: Some users outside of the DOD computing communities may receive DDN Security bulletins. If you are not part of the DOD community, please contact your agency's incident response team to report incidents. Your agency's team will coordinate with DOD. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained by sending email to docserver@first.org with an empty subject line and a message body containing the line: send first-contacts. This document was prepared as an service to the DOD community. Neither the United States Government nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government. The opinions of the authors expressed herein do not necessarily state or reflect those of the United States Government, and shall not be used for advertising or product endorsement purposes.