IRIX syssgi system call vulnerability and other security fixes
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______________________________________________________________________________
SGI Security Advisory
Title: syssgi system call vulnerability and other security fixes
Number: 20040601-01-P
Date: June 14, 2004
Reference: SGI BUG 914420, CVE CAN-2004-0135
Reference: SGI BUG 912601, CVE CAN-2004-0136
Reference: SGI BUG 907407, CVE CAN-2004-0137
Fixed in: Patches 5625 5548 5538 5627 5549 5628 5621 5550 5620
Fixed in: Patches 5622 5551 5613 5630 5619 5553 5624 5593
______________________________________________________________________________
SGI provides this information freely to the SGI user community for its
consideration, interpretation, implementation and use. SGI recommends
that this information be acted upon as soon as possible.
SGI 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
SGI 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 ---
- -----------------------
Adam Gowdiak from the Poznan Supercomputing and Networking Center
has reported that under certain conditions non privileged users
can use the syssgi system call SGI_IOPROBE to read and write kernel memory
which can be used to obtain root user privileges.
SGI has assigned the following Common Vulnerabilities and Exposures
(cve.mitre.org) name to the syssgi SGI_IOPROBE vulnerability:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0135
Two local DoS fixes are also addressed in these patches:
* 912601: corrupted binary can crash the system in mapelf32exec()
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0136
* 907407: init can panic due to page invalidation issues
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0137
SGI has investigated the issue and recommends the following steps for
resolving this issue. It is HIGHLY RECOMMENDED that these measures
be implemented on ALL vulnerable SGI systems. This issue has been
corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
To determine the version of IRIX you are running, execute the following
command:
# /bin/uname -R
That will return a result similar to the following:
# 6.5 6.5.21f
The first number ("6.5") is the release name, the second ("6.5.21f" in
this case) is the extended release name. The extended release name
is the "version" we refer to throughout this document.
- ----------------
- --- Solution ---
- ----------------
SGI has provided a series of patches for these vulnerabilities.
Our recommendation is to upgrade to IRIX 6.5.25, or install the
appropriate patches.
OS Version Vulnerable? Patch # Other Actions
- ---------- ----------- ------- -------------
IRIX 3.x unknown Note 1
IRIX 4.x unknown Note 1
IRIX 5.x unknown Note 1
IRIX 6.0.x unknown Note 1
IRIX 6.1 unknown Note 1
IRIX 6.2 unknown Note 1
IRIX 6.3 unknown Note 1
IRIX 6.4 unknown Note 1
IRIX 6.5 unknown Note 1
IRIX 6.5.1 unknown Note 1
IRIX 6.5.2 unknown Note 1
IRIX 6.5.3 unknown Note 1
IRIX 6.5.4 unknown Note 1
IRIX 6.5.5 unknown Note 1
IRIX 6.5.6 unknown Note 1
IRIX 6.5.7 unknown Note 1
IRIX 6.5.8 unknown Note 1
IRIX 6.5.9 unknown Note 1
IRIX 6.5.10 unknown Note 1
IRIX 6.5.11 unknown Note 1
IRIX 6.5.12 unknown Note 1
IRIX 6.5.13 unknown Note 1
IRIX 6.5.14 unknown Note 1
IRIX 6.5.15 unknown Note 1
IRIX 6.5.16 unknown Note 1
IRIX 6.5.17 unknown Note 1
IRIX 6.5.18 unknown Note 1
IRIX 6.5.19 unknown Note 1
IRIX 6.5.20m yes 5625 & 5548 Notes 2 & 3 & 4
or 5626 & 5548
IRIX 6.5.20f yes 5627 & 5549 Notes 2 & 3 & 5
or 5628 & 5549
IRIX 6.5.21m yes 5621 & 5550 Notes 2 & 3 & 6
or 5620 & 5550
IRIX 6.5.21f yes 5622 & 5551 Notes 2 & 3
IRIX 6.5.22 yes 5613 & 5630 Notes 2 & 3
IRIX 6.5.23 yes 5619 & 5553 Notes 2 & 3
IRIX 6.5.24 yes 5624 & 5593 Notes 2 & 3
IRIX 6.5.25 no
NOTES
1) This version of the IRIX operating system is not actively supported.
Upgrade to an actively supported IRIX operating system.
See http://support.sgi.com/ for more information.
2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact
your SGI Support Provider or URL: http://support.sgi.com/
3) Install ALL the required patch(es) based on your operating release.
4) Patches 5625 & 5548 are for all platforms except IP35 systems.
Patches 5626 & 5548 are for IP35 systems only.
5) Patches 5627 & 5549 are for all platforms except IP35 systems.
Patches 5628 & 5549 are for IP35 systems only.
6) Patches 5621 & 5550 are for all platforms except IP35 systems.
Patches 5620 & 5550 are for IP35 systems only.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
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- ------------------------
- --- Acknowledgments ----
- ------------------------
SGI wishes to thank Adam Gowdiak and the Poznan Supercomputing and
Networking Center for their assistance in this matter.
- -------------
- --- Links ---
- -------------
SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/advisories/
Red Hat Errata: Security Alerts, Bugfixes, and Enhancements
http://www.redhat.com/apps/support/errata/
SGI Advanced Linux Environment security updates can found on:
ftp://oss.sgi.com/projects/sgi_propack/download/
SGI patches can be found at the following patch servers:
http://support.sgi.com/
The primary SGI anonymous FTP site for security advisories and
security patches is ftp://patches.sgi.com/support/free/security/
- -----------------------------------------
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- -----------------------------------------
If there are questions about this document, email can be sent to
security-info@xxxxxxxx
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