Vulnerability in nsd LDAP Implementation on IRIX

2003-04-26T00:00:00
ID SECURITYVULNS:DOC:4450
Type securityvulns
Reporter Securityvulns
Modified 2003-04-26T00:00:00

Description

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                      SGI Security Advisory

Title : Vulnerability in nsd LDAP Implementation Number : 20030407-01-P Date : April 25, 2003 Reference: CVE CAN-2003-0174 Reference: SGI BUGS 834042 874955 Fixed in : IRIX 6.5.20 (when available) or patch 5063



  • --- Issue Specifics ---

It has been reported that IRIX's LDAP name service implementation does not detect whether an LDAP server provides the USERPASSWORD attribute for each entry in the password database. This could allow a user to log in without any password.

SGI has investigated the issues and recommends the following steps for neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures be implemented on ALL vulnerable SGI systems.

These issues have been corrected with a patch and in future releases of IRIX.


  • --- Impact ---

The nsd daemon and the libns_ldap.so library are installed by default on IRIX 6.5 systems as part of eoe.sw.base.

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 6.5.16f

The first number ("6.5") is the release name, the second ("6.5.16f" in this case) is the extended release name. The extended release name is the "version" we refer to throughout this document.


  • --- Temporary Workaround ---

If you need to use LDAP, there is no effective workaround available for these problems. SGI recommends either upgrading to IRIX 6.5.20 (when available), or installing the appropriate patch from the listing below.


  • --- Solution ---

SGI has provided a series of patches for these vulnerabilities. Our recommendation is to upgrade to IRIX 6.5.20 (when available), or install the appropriate patch.

Security patches are available on both http://support.sgi.com/ and ftp://patches.sgi.com/support/free/security/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 yes Notes 2, 3 & 5 IRIX 6.5.1 yes Notes 2, 3 & 5 IRIX 6.5.2 yes Notes 2, 3 & 5 IRIX 6.5.3 yes Notes 2, 3 & 5 IRIX 6.5.4 yes Notes 2, 3 & 5 IRIX 6.5.5 yes Notes 2, 3 & 5 IRIX 6.5.6 yes Notes 2, 3 & 5 IRIX 6.5.7 yes Notes 2, 3 & 5 IRIX 6.5.8 yes Notes 2, 3 & 5 IRIX 6.5.9 yes Notes 2, 3 & 5 IRIX 6.5.10 yes Notes 2, 3 & 5 IRIX 6.5.11 yes Notes 2, 3 & 5 IRIX 6.5.12 yes Notes 2, 3 & 5 IRIX 6.5.13 yes Notes 2, 3 & 5 IRIX 6.5.14 yes Notes 2, 3 & 5 IRIX 6.5.15 yes 5063 Notes 2, 4 & 5 IRIX 6.5.16 yes 5063 Notes 2, 4 & 5 IRIX 6.5.17 yes 5063 Notes 2, 4 & 5 IRIX 6.5.18 yes 5063 Notes 2, 4 & 5 IRIX 6.5.19 yes 5063 Notes 2, 4 & 5 IRIX 6.5.20 no Note 5

NOTES

 1) This version of the IRIX operating has been retired. 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) Upgrade to IRIX 6.5.20 (when available)

 4) Install the patch or upgrade to IRIX 6.5.20 (when available)

 5) After the upgrade to IRIX 6.5.20 or the appropriate patch has been
    applied, the system administrator may choose to reject all password
    database entries that do not have a USERPASSWORD attribute. This
    may be achieved by adding the following line to the file
    /var/ns/ldap.conf, in the sections that define the passwd.byname
    and passwd.byuid tables:

         require USERPASSWORD

    When this has been done, entries that do not have any data for the
    USERPASSWORD attribute will not appear in the password database.

         ##### Patch File Checksums ####

The actual patch will be a tar file containing the following files:

Filename: README.patch.5063 Algorithm #1 (sum -r): 38335 9 README.patch.5063 Algorithm #2 (sum): 55349 9 README.patch.5063 MD5 checksum: 312EADECF448AE4DD94B94CDD32EBE70

Filename: patchSG0005063 Algorithm #1 (sum -r): 61119 2 patchSG0005063 Algorithm #2 (sum): 4626 2 patchSG0005063 MD5 checksum: 567CFEA58B178B2C3518BFB6ECD4729F

Filename: patchSG0005063.eoe_sw Algorithm #1 (sum -r): 42558 165 patchSG0005063.eoe_sw Algorithm #2 (sum): 30121 165 patchSG0005063.eoe_sw MD5 checksum: DC53C976918C5142FBF885B90C424372

Filename: patchSG0005063.idb Algorithm #1 (sum -r): 63185 2 patchSG0005063.idb Algorithm #2 (sum): 43796 2 patchSG0005063.idb MD5 checksum: D8A4420C2133C46C206EC23E1B48CE4D

Filename: patchSG0005063.sw Algorithm #1 (sum -r): 42558 165 patchSG0005063.sw Algorithm #2 (sum): 30121 165 patchSG0005063.sw MD5 checksum: DC53C976918C5142FBF885B90C424372


  • --- Links ---

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/ 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/ or http://oss.sgi.com/

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

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

IRIX 6.5 Maintenance Release Streams can be found at: http://support.sgi.com/

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

The primary SGI anonymous FTP site for security advisories and patches is patches.sgi.com. 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.


  • --- SGI Security Information/Contacts ---

If there are questions about this document, email can be sent to security-info@sgi.com.

                  ------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. 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 security-info@sgi.com.

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.

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                  ------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 security-info@sgi.com.

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.


  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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