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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
___ __ __ _ ___
/ | /_\ /
\___ __|__ / \ \___
__________________________________________________________
INFORMATION BULLETIN
IRIX Desktop Permissions Panel Vulnerability
May 23, 1996 18:00 GMT Number G-26
______________________________________________________________________________
PROBLEM: A vulnerability has been discovered in the Desktop Permissions
tool on the IRIX 5.3, 6.1, and 6.2 operating systems under the
IRIX desktop environment.
PLATFORM: SGI platforms running IRIX 5.3, 6.1 or 6.2 operating systems
DAMAGE: A user that can start up the IRIX desktop graphical permissions
tool could modify permissions on files they don't own (ex:
root-owned files)
SOLUTION: See the attached SGI bulletin below for more information on
patch availability.
______________________________________________________________________________
[ SGI Bulletin Begin]
______________________________________________________________________________
Silicon Graphics Inc. Security Advisory
Title: IRIX 5.3, 6.1, 6.2 Desktop Permissions Panel
Number: 19960501-01-PX
Date: May 21, 1996
______________________________________________________________________________
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 will not be liable for any indirect, special, or
consequential damages arising from the use of, failure to use or improper
use of any of the instructions or information in this Security Advisory.
______________________________________________________________________________
- - --------------
- - --- Impact ---
- - --------------
A vulnerability has been discovered in the IRIX 5.3, 6.1, and 6.2
operating systems regarding the permissions tool under the IRIX
desktop environment.
Normally, this tool is used by users to modify the permissions on their
files and files they are privileged for. Under certain conditions, a user
may be able to modify the permissions for restricted files. This is SGI
Bug #375613.
In order to exploit this vulnerability, it is necessary to have access
to a local account that can start the graphical permissions tool.
Refer to SGI Security Advisory 19951002 and/or system documentation
regarding password issues.
SGI Engineering has investigated this issue and recommends the following
steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these
measures be done on ALL SGI systems running IRIX 5.3, 6.1, and 6.2.
This issue will be corrected in future releases of IRIX.
- - ----------------
- - --- Solution ---
- - ----------------
**** IRIX 5.2, 6.0, 6.0.1 ****
IRIX operating system versions 5.2, 6.0, and 6.0.1 are not vulnerable.
No further action is required.
**** IRIX 5.3 ****
For the IRIX operating system version 5.3, an inst-able patch has been
generated and made available via anonymous FTP and your service/support
provider. The patch is number 1324 and will only install on IRIX 5.3.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Patch 1324 can be found in the following
directories on the FTP server:
~ftp/Security
or
~ftp/Patches/5.3
##### Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.1324
Algorithm #1 (sum -r): 36453 8 README.patch.1324
Algorithm #2 (sum): 40114 8 README.patch.1324
MD5 checksum: 028F5506433A1B9F770F1809D741EF98
Filename: patchSG0001324
Algorithm #1 (sum -r): 10430 1 patchSG0001324
Algorithm #2 (sum): 35624 1 patchSG0001324
MD5 checksum: F7C85F5A0870BA4C08DD62F181C81F2E
Filename: patchSG0001324.desktop_eoe_sw
Algorithm #1 (sum -r): 40704 106 patchSG0001324.desktop_eoe_sw
Algorithm #2 (sum): 32497 106 patchSG0001324.desktop_eoe_sw
MD5 checksum: EAF31E523E150A29FCF487B1C2802F50
Filename: patchSG0001324.idb
Algorithm #1 (sum -r): 62749 2 patchSG0001324.idb
Algorithm #2 (sum): 58166 2 patchSG0001324.idb
MD5 checksum: 96E559406CA6ABD75ACAA879776D028E
**** IRIX 6.1 ****
For the IRIX operating system version 6.1, an inst-able patch has been
generated and made available via anonymous FTP and your service/support
provider. The patch is number 1325 and will only install on IRIX 6.1.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Patch 1325 can be found in the following
directories on the FTP server:
~ftp/Security
or
~ftp/Patches/6.1
##### Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.1325
Algorithm #1 (sum -r): 64561 8 README.patch.1325
Algorithm #2 (sum): 40513 8 README.patch.1325
MD5 checksum: 846AECCEA5658BAFC843999968EC1F19
Filename: patchSG0001325
Algorithm #1 (sum -r): 49679 1 patchSG0001325
Algorithm #2 (sum): 31737 1 patchSG0001325
MD5 checksum: 277DC0914388DB42CAF4F67166B6AD84
Filename: patchSG0001325.desktop_eoe_sw
Algorithm #1 (sum -r): 23688 106 patchSG0001325.desktop_eoe_sw
Algorithm #2 (sum): 16622 106 patchSG0001325.desktop_eoe_sw
MD5 checksum: F9C6CBB8085916980F6FB0E750ED2739
Filename: patchSG0001325.idb
Algorithm #1 (sum -r): 44246 2 patchSG0001325.idb
Algorithm #2 (sum): 58029 2 patchSG0001325.idb
MD5 checksum: 7B5A50A754D4F2BCF43B2FB36402D2B9
**** IRIX 6.2 ****
For the IRIX operating system version 6.2, an inst-able patch has been
generated and made available via anonymous FTP and your service/support
provider. The patch is number 1326 and will only install on IRIX 6.2.
The SGI anonymous FTP site is sgigate.sgi.com (204.94.209.1) or its
mirror, ftp.sgi.com. Patch 1326 can be found in the following
directories on the FTP server:
~ftp/Security
or
~ftp/Patches/6.2
##### Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.1326
Algorithm #1 (sum -r): 26556 8 README.patch.1326
Algorithm #2 (sum): 40503 8 README.patch.1326
MD5 checksum: 100284465A0FC83BCDA9F51276628C2F
Filename: patchSG0001326
Algorithm #1 (sum -r): 09453 1 patchSG0001326
Algorithm #2 (sum): 33991 1 patchSG0001326
MD5 checksum: F22B45302095D815129FCDB52204F947
Filename: patchSG0001326.desktop_eoe_sw
Algorithm #1 (sum -r): 33276 105 patchSG0001326.desktop_eoe_sw
Algorithm #2 (sum): 65086 105 patchSG0001326.desktop_eoe_sw
MD5 checksum: 10798EFCDAB679BC26DE18A007666599
Filename: patchSG0001326.idb
Algorithm #1 (sum -r): 34209 2 patchSG0001326.idb
Algorithm #2 (sum): 57308 2 patchSG0001326.idb
MD5 checksum: 3F7CA27CB954C83ACA7E711B1F29139F
- - ------------------------
- - --- Acknowledgments ---
- - ------------------------
Silicon Graphics wishes to thank Aaron Mantel of NASA for his
assistance in this matter.
- - -----------------------------------------
- - --- SGI Security Information/Contacts ---
- - -----------------------------------------
Past SGI Advisories and security patches can be obtained via
anonymous FTP from sgigate.sgi.com or its mirror, ftp.sgi.com.
These security patches and advisories are provided freely to
all interested parties. For issues with the patches on the
FTP sites, email can be sent to cse-security-alert@csd.sgi.com.
For assistance obtaining or working with security patches, please
contact your SGI support provider.
If there are questions about this document, email can be sent to
cse-security-alert@csd.sgi.com.
Silicon Graphics provides a free security mailing list service. The
wiretap service allows interested parties to self-subscribe to receive
(via email) all SGI Security Advisories when released.
mail external-majordomo@postofc.corp.sgi.com
[BODY of "subscribe wiretap YourEmailAddress"]
For reporting *NEW* SGI security issues, email can be sent to
security-alert@sgi.com or contact your SGI support provider. A
support contract is not required for submitting a security report.
For those customers with WWW capability, the Silicon Graphics Security
Headquarters webpages serve as a focal point for security related
information for the Silicon Graphics environment. The URL is:
http://www.sgi.com/Support/Secur/security.html
[ End SGI Bulletin ]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Silicon Graphics for the
information contained in this bulletin.
_______________________________________________________________________________
CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
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Project Leader.
Previous CIAC notices, anti-virus software, and other information are
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CIAC has several self-subscribing mailing lists for electronic
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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC)
G-16: SGI rpc.statd Program Security Vulnerabilities
G-17: Vulnerabilities in Sample HTTPD CGIs
G-18: Digital OSF/1 dxconsole Security Vulnerability
G-19: IBM AIX rmail Vulnerability
G-20: Vulnerability in NCSA and Apache httpd Servers
G-21: Vulnerabilities in PCNFSD Program
G-22: rpc.statd Vulnerability
G-23: Solaris NIS+ Configuration Vulnerability
G-24: FreeBSD Security Vulnerabilities
G-25: SUN statd Program Vulnerability
RECENT CIAC NOTES ISSUED (Previous Notes available from CIAC)
Notes 07 - 3/29/95 A comprehensive review of SATAN
Notes 08 - 4/4/95 A Courtney update
Notes 09 - 4/24/95 More on the "Good Times" virus urban legend
Notes 10 - 6/16/95 PKZ300B Trojan, Logdaemon/FreeBSD, vulnerability
in S/Key, EBOLA Virus Hoax, and Caibua Virus
Notes 11 - 7/31/95 Virus Update, Hats Off to Administrators,
America On-Line Virus Scare, SPI 3.2.2 Released,
The Die_Hard Virus
Notes 12 - 9/12/95 Securely configuring Public Telnet Services, X
Windows, beta release of Merlin, Microsoft Word
Macro Viruses, Allegations of Inappropriate Data
Collection in Win95
Notes 96-01 - 3/18/96 Java and JavaScript Vulnerabilities, FIRST
Conference Announcement, Security and Web Search
Engines, Microsoft Word Macro Virus Update
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