Date: 24 Feb 1994 21:45:53 -0500 From: Pete Hammes Subject: ASSIST 94-05 To: assist-bulletin@assist.ims.disa.MIL Content-transfer-encoding: 7BIT -----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 4,MIC-CLEAR Content-Domain: RFC822 Originator-Certificate: MIICozCCAgwCAREwDQYJKoZIhvcNAQECBQAwgYYxC zAJBgNVBAYTAlVTMSswKQYDVQQKEyJEZWZlbnNlIEluZm9ybWF0aW9uIFN5c3Rlb XMgQWdlbmN5MTAwLgYDVQQLEydDZW50ZXIgZm9yIEluZm9ybWF0aW9uIFN5c3Rlb XMgU2VjdXJpdHkxGDAWBgNVBAsTD0NvdW50ZXJtZWFzdXJlczAeFw05MzEyMDkxO DU5MTZaFw05NTEyMDkxODU5MTZaMIGxMQswCQYDVQQGEwJVUzErMCkGA1UEChMiR GVmZW5zZSBJbmZvcm1hdGlvbiBTeXN0ZW1zIEFnZW5jeTEwMC4GA1UECxMnQ2Vud GVyIGZvciBJbmZvcm1hdGlvbiBTeXN0ZW1zIFNlY3VyaXR5MRgwFgYDVQQLEw9Db 3VudGVybWVhc3VyZXMxEzARBgNVBAsTCk9wZXJhdGlvbnMxFDASBgNVBAMTC1Bld GUgSGFtbWVzMIGaMAoGBFUIAQECAgQAA4GLADCBhwKBgQDFFJkcaDOuS+6Ai2vmT bwY6JRbhdzPsl6X60hnXruOw2WvrAhc8BTFB+id75m3M55i+Th6MxWH20QHyQq5u yVghOu/s37OxIrj7irNPjtUdPv8b2m4hNGEW53QH6GmXkxLmgLzOhookpoYPC+uw 2MzibDnleVI50d2m//XsWs7hwIBAzANBgkqhkiG9w0BAQIFAAOBgQDHH6CmBoyWU zPlqVnEWYKIBsifqdTJzkKfnoST7NDRIakUP49FP86Cyy1+2AKpUCWaxjq+wGHCH RCNFCCrOwdC9z8XwJal/c69ml6eLRhOoX77ANndpU9E5+eHxP+6Ute6lc63K7+Lz 5xOULjmgaMmKDkTXveVcQO6R2CTY37vcA== Issuer-Certificate: MIICNTCCAZ4CARswDQYJKoZIhvcNAQECBQAwRDELMAkGA 1UEBhMCVVMxCzAJBgNVBAgTAk1EMSgwJgYDVQQKEx9UcnVzdGVkIEluZm9ybWF0a W9uIFN5c3RlbXMgUENBMB4XDTkzMTExMDIxMjIxNloXDTk0MDIxODIxMjIxNlowg YYxCzAJBgNVBAYTAlVTMSswKQYDVQQKEyJEZWZlbnNlIEluZm9ybWF0aW9uIFN5c 3RlbXMgQWdlbmN5MTAwLgYDVQQLEydDZW50ZXIgZm9yIEluZm9ybWF0aW9uIFN5c 3RlbXMgU2VjdXJpdHkxGDAWBgNVBAsTD0NvdW50ZXJtZWFzdXJlczCBmjAKBgRVC AEBAgIEAAOBiwAwgYcCgYEA19l6BN7iTGYEU61qJETIjBh3iAeHzoL8sZ5KwFRZD S/a1KnYlD1zJHR/KeQCOBWW2HzX43TFLCNGU7UD9i6m8AymLe5IJf/bGh0Rne7Jd Q1GAOLw7/J4hE57IMbGETZpzeU1D9IYxiERRNio/oa422lUlS9JZHLA5jaPNcUrX P8CAQMwDQYJKoZIhvcNAQECBQADgYEAtk4EYPgH0//H896t95E+4m8zWRxwyAULr a5wWThZ1TNjwdDQ3HbYC2IhXUA2N2Vzic5SWBFI6BRmEjWQrrgUNi4a26zZc6jiS 3OebUYo75t1kkzyRaEf0o3DPnkvo0FQziUJaFpu6Z1/+ZoGu4UURwr/jaA+g1oZC 6kDyRnygWc= Issuer-Certificate: MIIB8jCCAVsCAQEwDQYJKoZIhvcNAQECBQAwRDELMAkGA 1UEBhMCVVMxCzAJBgNVBAgTAk1EMSgwJgYDVQQKEx9UcnVzdGVkIEluZm9ybWF0a W9uIFN5c3RlbXMgUENBMB4XDTkzMDUyODE3MTEyN1oXDTk1MDUyODE3MTEyN1owR DELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAk1EMSgwJgYDVQQKEx9UcnVzdGVkIEluZ m9ybWF0aW9uIFN5c3RlbXMgUENBMIGaMAoGBFUIAQECAgQAA4GLADCBhwKBgQDbL xaRlS3u54yyRgVDI5dcE9nlasL8fJqOGlyo7xH2FZnr3kUfsFj7OGiYsr6UbvqwK nyfMIRUrXDUa64leGmft3SK27psDUHOynRSCc40d/HrDf810U5tnTamBKUIMqivK 4GoL0tMRA1eX6hALAvLLgK1HbnwZAo6GqQGW8CIJQIBAzANBgkqhkiG9w0BAQIFA AOBgQDBp5aC6oV6IuFi8JCctq57bew604HHNllgjjp7zdXafq6jctRg2g91k/yFW h19bJC/tNrb0WVwuZOs5L/FToPMNIIHzaW/YSROBmyhTDYaKHZGj0P1+iNjMbHt9 dm1QEHGIfKgBwFidItnOa74DfkXdijlPRnr/+E2Ib6PM+hEfQ== MIC-Info: RSA-MD5,RSA,rGnK77AHq0vrV5UpjRKlpbZf9U3Bh4nbtv9gPHfGLrN W7nDN3ZatJEwY9XKO09GqBTv+nT7kCsxC4Tb+x93N+6j9HSI6PtyTPLII5y4spVL o9Zew05O6CURm4NISTZpmS538foN0Ifv+xbYmk9vuSaEvdfgk+0DZVv/G7uJNMFk = <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Automated Systems Security Incident Support Team _____ ___ ___ _____ ___ _____ | / /\ / \ / \ | / \ | | / Integritas / \ \___ \___ | \___ | | < et /____\ \ \ | \ | | \ Celeritas / \ \___/ \___/ __|__ \___/ | |_____\ <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Bulletin 94-05 Release date: 24 February 1994, 7:45 PM EDT Subject: IBM AIX Performance Tools Vulnerabilities SUMMARY: This bulletin contains information about vulnerabilities in the "bosext1.extcmds.obj" Licensed Program Product (performance tools). These problems exist on IBM AIX 3.2.4 systems that have Program Temporary Fixes (PTFs) U420020 or U422510 installed and and on all AIX 3.2.5 systems. BACKGROUND: Vulnerabilities exist in the bosext1.extcmds.obj performance tools in AIX 3.2.5 and in those AIX 3.2.4 systems with Program Temporary Fixes (PTFs) U420020 or U422510 installed. These problems do not exist in earlier versions of AIX. IMPACT: Local users can gain unauthorized root access to the system. RECOMMENDED SOLUTION: A. The recommended temporary solution for this problem is to change the permissions of all the programs in the /usr/lpp/bosperf directory structure so that the setuid bit is removed and the programs can be executed only by 'root'. This can be accomplished as follows: % su root # chmod -R u-s,og= /usr/lpp/bosperf/* The programs affected by this workaround include: filemon, fileplace, genkex, genkld, genld, lvedit, netpmon, rmap, rmss, stripnm, svmon, tprof As a result of this workaround, these programs will no longer be executable by users other than 'root'. B. The recommended permanent solution for this problem is to order and install the patches contained in Authorized Program Analysis Report (APAR) IX42332. To order an APAR from IBM call 1-800-237-5511 and ask for shipment as soon as it is available. APARs may be obtained outside the U.S. by contacting your local IBM representative. ASSIST would like to thank Jill K. Bowyer of USAF/DISA and the CERT Coordination Center for 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. If you have any questions about ASSIST or computer security issues, contact ASSIST using one of the methods listed below. If you would like to be included in the distribution list for these bulletins, send your Milnet (Internet) e-mail address to assist-request@assist.ims.disa.mil. Back issues of ASSIST bulletins, and other security related information, is available on the ASSIST bbs (see below), and through anonymous ftp from assist.ims.disa.mil (IP address 137.130.234.30). Note: assist.ims.disa.mil will only accept anonymous ftp connections from Milnet addresses that are registered with the NIC or DNS. ASSIST contact information: PHONE: 703-756-7974, DSN 289, duty hours are 06:30 to 17:00 Monday through Friday. During off duty hours, weekends, and holidays, ASSIST can be reached via pager at 800-SKY-PAGE (800-759-7243) PIN 2133937. Your page will be answered within 30 minutes, however if a quicker response is required, prefix your phone number with "999" ELECTRONIC MAIL: assist@assist.ims.disa.mil. ASSIST BBS: 703-756-7993/4, DSN 289, 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 192.94.214.100). 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. -----END PRIVACY-ENHANCED MESSAGE-----