DISTRIBUTION RESTRICTIONS - NONE - FOR PUBLIC RELEASE -----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ Silicon Graphics Inc. Security Advisory Title: IRIX LicenseManager(1M) Vulnerabilities Number: 19980406-01-PX Date: April 13, 1998 ______________________________________________________________________________ Silicon Graphics provides this information freely to the SGI user community for its consideration, interpretation, implementation and use. Silicon Graphics recommends that this information be acted upon as soon as possible. Silicon Graphics provides the information in this Security Advisory on an "AS-IS" basis only, and disclaims all warranties with respect thereto, express, implied or otherwise, including, without limitation, any warranty of merchantability or fitness for a particular purpose. In no event shall Silicon Graphics be liable for any loss of profits, loss of business, loss of data or for any indirect, special, exemplary, incidental or consequential damages of any kind arising from your use of, failure to use or improper use of any of the instructions or information in this Security Advisory. ______________________________________________________________________________ - ----------------------- - --- Issue Specifics --- - ----------------------- Under normal operation LicenseManager(1M) is a program used to view and manage FLEXlm and NetLS software licenses. Unfortunately, a set of vulnerabilities has been discovered that allows LicenseManager(1M) to arbitrary manipulate root-owned files allowing root access. Silicon Graphics Inc. has investigated the issue and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems. This issue will be corrected in future releases of IRIX. - -------------- - --- Impact --- - -------------- The LicenseManager(1M) program is installed by default from license_eoe software subsystem. license_eoe 3.0, 3.1 and 3.1.1 are vulnerable to this exploit. A user account on the vulnerable system is required in order to exploit LicenseManager(1M) locally and remotely. This vulnerability has been publically discussed in Usenet newsgroups and mailing lists. - -------------------------- - --- Temporary Solution --- - -------------------------- Although patches are available for this issue, it is realized that there may be situations where installing the patches immediately may not be possible. The steps below can be used to remove the vulnerability by removing the permissions of the LicenseManager(1M) program. 1) Become the root user on the system. % /bin/su - Password: # 2) Verify a vulnerable LicenseManager(1M) program is installed. Only license_eoe 3.0, 3.1 and 3.1.1 are vulnerable. # versions -b license_eoe I = Installed, R = Removed Name Date Description I license_eoe 04/30/97 License Tools 3.1.1 3) Change the permissions on the vulnerable LicenseManger(1M) program. # /bin/chmod 500 /usr/etc/LicenseManager ************ *** NOTE *** ************ Removing the permissions from the vulnerable program will prevent non-root users from accessing LicenseManager(1M). 4) Verify the new permissions on the program. Note that the program size may be different depending on release. # ls -al /usr/etc/LicenseManager -r-x------ 1 root sys 489960 Aug 12 1997 LicenseManager 5) Return to previous user level. # exit $ - ---------------- - --- Solution --- - ---------------- OS Version Vulnerable? Patch # Other Actions ---------- ----------- ------- ------------- IRIX 3.x no IRIX 4.x no IRIX 5.0.x no IRIX 5.1.x no IRIX 5.2 no IRIX 5.3 yes 1678 IRIX 6.0.x no IRIX 6.1 yes not avail see Note 1 IRIX 6.2 yes 1678 IRIX 6.3 yes 1695 IRIX 6.4 no NOTES 1) upgrade operating system or see "Temporary Solution" section. Patches are available via anonymous FTP and your service/support provider. The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its mirror, ftp.sgi.com. Security information and patches can be found in the ~ftp/security and ~ftp/patches directories, respectfully. ##### Patch File Checksums #### The actual patch will be a tar file containing the following files: Filename: README.patch.1678 Algorithm #1 (sum -r): 17618 8 README.patch.1678 Algorithm #2 (sum): 40340 8 README.patch.1678 MD5 checksum: 906F439EF5223C3983075E81BABA9FB4 Filename: patchSG0001678 Algorithm #1 (sum -r): 59371 2 patchSG0001678 Algorithm #2 (sum): 43134 2 patchSG0001678 MD5 checksum: 0EF19CA382CE0A6AA37A00C902887FEA Filename: patchSG0001678.idb Algorithm #1 (sum -r): 57535 2 patchSG0001678.idb Algorithm #2 (sum): 53685 2 patchSG0001678.idb MD5 checksum: DF0690A6221F58AB341B454EC5AEB547 Filename: patchSG0001678.license_eoe_sw Algorithm #1 (sum -r): 34073 467 patchSG0001678.license_eoe_sw Algorithm #2 (sum): 14344 467 patchSG0001678.license_eoe_sw MD5 checksum: 4BB892CEFAB1B30E60AFBFCA60FB8973 Filename: README.patch.1695 Algorithm #1 (sum -r): 11915 8 README.patch.1695 Algorithm #2 (sum): 39231 8 README.patch.1695 MD5 checksum: 40C01BDA39D2E04BAA8D230F2FBD4448 Filename: patchSG0001695 Algorithm #1 (sum -r): 38972 2 patchSG0001695 Algorithm #2 (sum): 39704 2 patchSG0001695 MD5 checksum: DE1959B750CB6E7325098117DBE65D3A Filename: patchSG0001695.idb Algorithm #1 (sum -r): 51707 2 patchSG0001695.idb Algorithm #2 (sum): 52218 2 patchSG0001695.idb MD5 checksum: 5789D0AF24D8C0045453D0269374BD62 Filename: patchSG0001695.license_eoe_sw Algorithm #1 (sum -r): 49617 455 patchSG0001695.license_eoe_sw Algorithm #2 (sum): 32263 455 patchSG0001695.license_eoe_sw MD5 checksum: 90B7D8ACCCC1045CE77DB882748A7FC0 - ------------------------ - --- Acknowledgments --- - ------------------------ Silicon Graphics wishes to thank the Internet community at large for their assistance in this matter. - ----------------------------------------------------------- - --- Silicon Graphics Inc. Security Information/Contacts --- - ----------------------------------------------------------- If there are questions about this document, email can be sent to cse-security-alertat_private ------oOo------ Silicon Graphics provides security information and patches for use by the entire SGI community. This information is freely available to any person needing the information and is available via anonymous FTP and the Web. The primary SGI anonymous FTP site for security information and patches is sgigate.sgi.com (204.94.209.1). Security information and patches are located under the directories ~ftp/security and ~ftp/patches, respectively. The Silicon Graphics Security Headquarters Web page is accessible at the URL http://www.sgi.com/Support/security/security.html. For issues with the patches on the FTP sites, email can be sent to cse-security-alertat_private For assistance obtaining or working with security patches, please contact your SGI support provider. ------oOo------ Silicon Graphics provides a free security mailing list service called wiretap and encourages interested parties to self-subscribe to receive (via email) all SGI Security Advisories when they are released. Subscribing to the mailing list can be done via the Web (http://www.sgi.com/Support/security/wiretap.html) or by sending email to SGI as outlined below. % mail wiretap-requestat_private subscribe wiretap <YourEmailAddress> end ^d In the example above, <YourEmailAddress> is the email address that you wish the mailing list information sent to. The word end must be on a separate line to indicate the end of the body of the message. The control-d (^d) is used to indicate to the mail program that you are finished composing the mail message. ------oOo------ Silicon Graphics provides a comprehensive customer World Wide Web site. This site is located at http://www.sgi.com/Support/security/security.html. ------oOo------ For reporting *NEW* SGI security issues, email can be sent to security-alertat_private or contact your SGI support provider. A support contract is not required for submitting a security report. ______________________________________________________________________________ This information is provided freely to all interested parties and may be redistributed provided that it is not altered in any way, Silicon Graphics is appropriately credited and the document retains and includes its valid PGP signature. -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBNTJ6HLQ4cFApAP75AQE1uAQAil2oG0nboVUBwf6FOh0s9DLroVrxkDM2 b/DeiVogjvbSXWfRb9zFfAK8vtDiOYKfDcspnUqe8M1KvCB8bkOoRlwbvL6l9e5U ci90g/rGZF8t+o7Jwtw/BiyVIcrV4vJjM3+0QDD3iBFTpP+jVixJlg/NcTYOlgjG Km0WjvEDtRc= =d7kC -----END PGP SIGNATURE-----
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