----------------------------------------------------------------------------- SUN MICROSYSTEMS SECURITY BULLETIN: #00128, 20 July 1994 ----------------------------------------------------------------------------- BULLETIN TOPICS In this bulletin Sun summarizes the availability of new security patches for SunOS 4.1.x systems and 5.x (Solaris 2.x) systems. These patches are the same as those announced last week in CERT advisory CA-94:12 with two exceptions, noted below. I. Announcement of patches for SunOS-wide "sendmail" vulnerability II. Checksum Table APPENDICES A. How to obtain Sun security patches B. How to report or inquire about Sun security problems C. How to obtain Sun security bulletins /\ Send Replies or Inquiries To: \\ \ \ \\ / Mark Graff / \/ / / Sun Security Coordinator / / \//\ MS MPK2-04 \//\ / / 2550 Garcia Avenue / / /\ / Mountain View, CA 94043-1100 / \\ \ Phone: 415-688-9081 \ \\ Fax: 415-688-9101 \/ E-mail: security-alert@Sun.COM ----------- Permission is granted for the redistribution of this Bulletin for the purpose of alerting Sun customers to problems, as long as the Bulletin is not edited and is attributed to Sun Microsystems. 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. ----------------------------------------------------------------------------- SUN MICROSYSTEMS SECURITY BULLETIN: #00128, 20 July 1994 ----------------------------------------------------------------------------- I. Announcement of patches for SunOS-wide "sendmail" vulnerability A. Patch list A set of new sendmail patches fixes a security hole involving the "-d" option to sendmail. The patched vulnerability can allow a user with an unprivileged account on a system to overwrite system files and thus gain root access. Fixes for several other vulnerabilities are included as well. We have produced patches for the versions of SunOS shown below. OS version Patch ID Patch File Name ---------- --------- --------------- 4.1.1 100377-15 100377-15.tar.Z 4.1.2 100377-15 100377-15.tar.Z 4.1.3 100377-15 100377-15.tar.Z 4.1.3_U1 101665-02 101665-02.tar.Z 5.1_x86 101352-03 101352-03.tar.Z 5.1 100834-11 100834-11.tar.Z 5.2 101842-01 101842-01.tar.Z 5.3 101739-01 101739-01.tar.Z B. Patch notes 1. The last security-related patch for 4.1.x sendmail was distributed as 100377-08 (announced 23 December 1993). Revisions -09 through -14 were not related to security. 2. The 4.1.1 patch includes a version built for the sun3 architecture. 3. The 4.1.3 version of the patch is also applicable to 4.1.3C systems. 4. The patch listed for 4.1.3_U1 (Solaris 1.1.1) applies to both the A and B versions. This is currently true for all U1 patches. 5. One of the listed patches (100834-11, for SunOS 5.1) is actually a jumbo kernel patch into which sendmail was bundled. The other two SunOS 5.x patches, and all of the 4.1.x patches, contain only sendmail fixes. (Sun bundled all 5.x sendmails into jumbo kernel patches earlier this year, but later unbundled the 5.3 and 5.2 patches in response to customer feedback. We plan to unbundle the 5.1 sendmail later this summer.) 6. CERT bulletin CA-94:12, released on 14 July 1994, listed different patch numbers for SunOS 5.1 and 5.2. The numbers listed here are correct. The discrepancy resulted from a misunderstanding between Sun and CERT. We regret the error. II. Checksum Table In the checksum table we show the BSD and SVR4 checksums and MD5 digital signatures for the compressed tar archives. File BSD SVR4 MD5 Name Checksum Checksum Digital Signature --------------- ----------- ---------- -------------------------------- 100377-15.tar.Z 03367 756 44976 1511 F030E8D13EF70F540FE88DE5855BC101 101665-02.tar.Z 10559 230 65031 459 0F34BB17977EB95901FFD19A45091E14 101352-03.tar.Z 57618 561 39900 1121 4F91E0E24066DC6F7FA5C742A9A282D2 100834-11.tar.Z 02013 1701 21089 3402 CF94A5B0E149BAA1056EDC8035FD550A 101842-01.tar.Z 47566 192 30222 384 3EE2EF8F9FEC43A3EFB5251AB4C033FA 101739-01.tar.Z 40730 204 12341 407 D521709A8C6B46BADA393EC2B505C5A8 The checksums shown above are from the BSD-based checksum (on 4.1.x, /bin/sum; on Solaris 2.x, /usr/ucb/sum) and from the SVR4 version on Solaris 2.x (/usr/bin/sum). APPENDICES A. How to obtain Sun security patches 1. If you have a support contract Customers with Sun support contracts can obtain the patches listed here--and all other Sun security patches--from: - Local Sun answer centers, worldwide - SunSolve Online You should also contact your answer center if you have a support contract and: - You need assistance in installing a patch - You need additional patches - You want an existing patch ported to another platform - You believe you have encountered a bug in a Sun patch - You want to know if a patch exists, or when one will be ready 2. If you do not have a support contract Sun also makes its security patches available to customers who do not have a support contract, via anonymous ftp: - In the US, from /systems/sun/sun-dist on ftp.uu.net - In Europe, from ~ftp/sun/fixes on ftp.eu.net In some cases patches will appear on the European site a day or two after a bulletin is released. Sun does not furnish patches to any external distribution sites other than the ones listed here. 3. About the checksums Patches announced in a Sun security bulletin are uploaded to the ftp.*.net sites just before the bulletin is released, and seldom updated. In contrast, the "supported" patch databases are refreshed nightly, and will often contain newer versions of a patch incorporating changes which are not security-related. So that you can quickly verify the integrity of the patch files themselves, we supply checksums for the tar archives in each bulletin. The listed checksums should always match those on the ftp.*.net systems. (The rare exceptions are listed in the "checksums" file there.) Normally, the listed checksums will also match the patches on the SunSolve database. However, this will not be true if we have changed (as we sometimes do) the README file in the patch after the bulletin has been released. In the future we plan to provide checksum information for the individual components of a patch as well as the compressed archive file. This will allow customers to determine, if need be, which file(s) have been changed since we issued the bulletin containing the checksums. If you would like assistance in verifying the integrity of a patch file please contact this office or your local answer center. B. How to report or inquire about Sun security problems If you discover a security problem with Sun software or wish to inquire about a possible problem, contact one or more of the following: - Your local Sun answer centers - Your representative computer security response team, such as CERT - This office. Address postal mail to: Sun Security Coordinator MS MPK2-04 2550 Garcia Avenue Mountain View, CA 94043-1100 Phone: 415-688-9081 Fax: 415-688-9101 E-mail: security-alert@Sun.COM We strongly recommend that you report problems to your local Answer Center. In some cases they will accept a report of a security bug even if you do not have a support contract. An additional notification to the security-alert alias is suggested but should not be used as your primary vehicle for reporting a bug. C. How to obtain Sun security bulletins 1. Subscription information Sun Security Bulletins are available free of charge as part of our Customer Warning System. It is not necessary to have a Sun support contract in order to receive them. To subscribe to this bulletin series, send mail to the address "security-alert@Sun.COM" with the subject "subscribe CWS your-mail-address" and a message body containing affiliation and contact information. To request that your name be removed from the mailing list, send mail to the same address with the subject "unsubscribe CWS your-mail-address". Do not include other requests or reports in a subscription message. Due to the volume of subscription requests we receive, we cannot guarantee to acknowledge requests. Please contact this office if you wish to verify that your subscription request was received, or if you would like your bulletin delivered via postal mail or fax. 2. Obtaining old bulletins Sun Security Bulletins are archived on ftp.uu.net (in the same directory as the patches) and on SunSolve. Please try these sources first before contacting this office for old bulletins. ------------