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securityvulnsSecurityvulnsSECURITYVULNS:DOC:2374
HistoryJan 16, 2002 - 12:00 a.m.

IRIX nsd Vulnerability

2002-01-1600:00:00
vulners.com
16
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                      SGI Security Advisory

    Title:   IRIX nsd vulnerability
    Number:  20020102-02-I
    Date:    January 15, 2002

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.

  • β€” Update β€”

Removed erroneous patch information from the original advisory.

  • β€” Issue Specifics β€”

A vulnerability related to the way the IRIX unified name service daemon
(nsd) manages its cache files has been reported.

Due to a bug in a cache-limiting function, the cache can grow to eventually
fill the system disk.

SGI 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 has been corrected
in future releases of IRIX.

  • β€” Impact β€”

The nsd daemon is installed by default on all 6.5.x versions of IRIX, and
this vulnerability exists in all versions of IRIX 6.5.4m/f through
6.5.11m/f. The problem has been fixed in IRIX 6.5.12m/f.

A local user account on the vulnerable system is not required in order to
exploit this vulnerability.

The exploitation of this vulnerability can lead to a full system disk,
effectively resulting in a Denial of Service.

This vulnerability has been publicly discussed in Usenet newsgroups
and mailing lists.

  • β€” Solution β€”

SGI has provided a patch for these vulnerabilities for IRIX 6.5.11.
The problem has been fixed in IRIX 6.5.12. Our recommendation is to
upgrade to IRIX 6.5.12 or later.

OS Version Vulnerable? Patch # Other Actions

IRIX 3.x no Note 1
IRIX 4.x no Note 1
IRIX 5.x no Note 1
IRIX 6.0.x no Note 1
IRIX 6.1 no Note 1
IRIX 6.2 no Note 1
IRIX 6.3 no Note 1
IRIX 6.4 no Note 1
IRIX 6.5 no Notes 2 & 3
IRIX 6.5.1 no Notes 2 & 3
IRIX 6.5.2 no Notes 2 & 3
IRIX 6.5.3 no Notes 2 & 3
IRIX 6.5.4 yes Notes 2 & 3
IRIX 6.5.5 yes Notes 2 & 3
IRIX 6.5.6 yes Notes 2 & 3
IRIX 6.5.7 yes Notes 2 & 3
IRIX 6.5.8 yes Notes 2 & 3
IRIX 6.5.9 yes Notes 2 & 3
IRIX 6.5.10 yes Notes 2 & 3
IRIX 6.5.11 yes Notes 2 & 3
IRIX 6.5.12 no
IRIX 6.5.13 no
IRIX 6.5.14 no

NOTES

 1) This version of the IRIX operating has been retired.
    Upgrade to an actively supported IRIX operating system. 
    See http://support.sgi.com/irix/news/index.html#policy 
    for more information.

 2) Download the IRIX 6.5.12 or later Maintenance Release Stream from
    the URL:
    http://support.sgi.com/colls/patches/tools/relstream/index.html

 3) 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/irix/swupdates/

  • β€” Acknowledgments ----

SGI wishes to thank Heiko Schlichting of Freie UniversitΠ΄t Berlin and the
users of the Internet Community at large for their assistance in this
matter.

  • β€” References β€”

SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/advisories/

SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/patches/

SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/

SGI freeware updates for IRIX can be found at:
http://freeware.sgi.com/

SGI fixes for SGI open sourced code can be found on:
http://oss.sgi.com/projects/

SGI patches and RPMs for Linux can be found at:
http://support.sgi.com/linux/ or
http://oss.sgi.com/projects/sgilinux-combined/download/security-fixes/

SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/nt/

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/irix/ and ftp://patches.sgi.com/support/patchset/

IRIX 6.5 Maintenance Release Streams can be found at:
http://support.sgi.com/colls/patches/tools/relstream/index.html

IRIX 6.5 Software Update CDs can be obtained from:
http://support.sgi.com/irix/swupdates/

The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com (216.32.174.211). Security advisories and patches are
located under the URL ftp://patches.sgi.com/support/free/security/

For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com security FTP repository) lags behind and does not do a
real-time update.

  • β€” SGI Security Information/Contacts β€”

If there are questions about this document, email can be sent to
[email protected].

                  ------oOo------

SGI 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 advisories and patches is
patches.sgi.com (216.32.174.211). Security advisories and patches are
located under the URL ftp://patches.sgi.com/support/free/security/

The SGI Security Headquarters Web page is accessible at the URL:
http://www.sgi.com/support/security/

For issues with the patches on the FTP sites, email can be sent to
[email protected].

For assistance obtaining or working with security patches, please
contact your SGI support provider.

                  ------oOo------

SGI 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 [email protected]
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------

SGI provides a comprehensive customer World Wide Web site. This site is
located at http://www.sgi.com/support/security/ .

                  ------oOo------

If there are general security questions on SGI systems, email can be sent
to
[email protected].

For reporting NEW SGI security issues, email can be sent to
[email protected] 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, SGI is appropriately credited and the document retains and 
  includes its valid PGP signature.

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