IRIX XFS filesystem denial of service attack

Type securityvulns
Reporter Securityvulns
Modified 2002-04-16T00:00:00



                      SGI Security Advisory

    Title:      IRIX XFS filesystem denial of service attack
    Number:     20020402-01-P
    Date:       April 15, 2002
    Reference:  CAN-2002-0042

  • --- Issue Specifics ---

It has been reported that there is a vulnerability in IRIX's XFS filesystem. Under some circumstances, a user can create a file that would hang any application that would try to access it. This has the potential to be used to create a Denial of Service attack.

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 IRIX 6.5.12 and later versions.

  • --- Impact ---

The XFS filesystem is the default filesystem in IRIX 6.5, therefore all IRIX 6.5 systems are potentially vulnerable to this problem.

This vulnerability may be not exploited by a remote user, a local account is required.

This vulnerability can lead to a Denial of Service.

SGI assigned the following CVE to this vulnerability:

  • --- Solution ---

SGI has released patches to address this problem. Our recommendation is to upgrade to IRIX 6.5.12 or later.

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 IRIX 6.5.1 yes Notes 2 & 3 IRIX 6.5.2 yes Notes 2 & 3 IRIX 6.5.3 yes 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 6.5.10m yes 4286 IRIX 6.5.10f yes 4253 IRIX 6.5.11m yes Notes 2 & 3 IRIX 6.5.11f yes 4254 IRIX 6.5.12 no IRIX 6.5.13 no IRIX 6.5.14 no IRIX 6.5.15 no


 1) This version of the IRIX operating has been retired. Upgrade to an
    actively supported IRIX operating system.  See for more

 2) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact your
    SGI Support Provider or URL:

 3) Upgrade to IRIX 6.5.12 or later

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

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

Filename: README.patch.4286 Algorithm #1 (sum -r): 28330 8 README.patch.4286 Algorithm #2 (sum): 39948 8 README.patch.4286 MD5 checksum: DD88F4A17F3BAFEA470C17CFB68F693A

Filename: patchSG0004286 Algorithm #1 (sum -r): 42009 2 patchSG0004286 Algorithm #2 (sum): 42193 2 patchSG0004286 MD5 checksum: 01F9634E6DCD8893C0D743B267C1D959

Filename: patchSG0004286.eoe_sw Algorithm #1 (sum -r): 25043 13360 patchSG0004286.eoe_sw Algorithm #2 (sum): 45889 13360 patchSG0004286.eoe_sw MD5 checksum: 0770194058C390E5DA0EE1D402CB47AC

Filename: patchSG0004286.idb Algorithm #1 (sum -r): 29719 7 patchSG0004286.idb Algorithm #2 (sum): 17684 7 patchSG0004286.idb MD5 checksum: FE5CFE59138343ED743E4658D878FD42

Filename: README.patch.4253 Algorithm #1 (sum -r): 53492 29 README.patch.4253 Algorithm #2 (sum): 10868 29 README.patch.4253 MD5 checksum: 117515A96FDCC06DA6D360069BF14198

Filename: patchSG0004253 Algorithm #1 (sum -r): 54098 19 patchSG0004253 Algorithm #2 (sum): 7810 19 patchSG0004253 MD5 checksum: FDE0FBDAF74600BB5D6C98B4B36A518B

Filename: patchSG0004253.cluster_admin_sw Algorithm #1 (sum -r): 53890 1264 patchSG0004253.cluster_admin_sw Algorithm #2 (sum): 41015 1264 patchSG0004253.cluster_admin_sw MD5 checksum: ADB036F14DD3BB0CABFF56DFA49D64A5

Filename: patchSG0004253.cluster_control_sw Algorithm #1 (sum -r): 57927 2911 patchSG0004253.cluster_control_sw Algorithm #2 (sum): 46116 2911 patchSG0004253.cluster_control_sw MD5 checksum: 195444B1050AB985125A280B790E6D6C

Filename: patchSG0004253.cluster_services_sw Algorithm #1 (sum -r): 14277 1808 patchSG0004253.cluster_services_sw Algorithm #2 (sum): 60017 1808 patchSG0004253.cluster_services_sw MD5 checksum: 365929CFBBF50B179FC7B5CBF8BBCDED

Filename: patchSG0004253.cxfs_sw Algorithm #1 (sum -r): 40423 7581 patchSG0004253.cxfs_sw Algorithm #2 (sum): 62074 7581 patchSG0004253.cxfs_sw MD5 checksum: 1DF5877BB29275C77B6BF5C9C1469F2F

Filename: patchSG0004253.eoe_sw Algorithm #1 (sum -r): 03986 4440 patchSG0004253.eoe_sw Algorithm #2 (sum): 7047 4440 patchSG0004253.eoe_sw MD5 checksum: 31C4B8300741D3C904B50661C9B0402A

Filename: patchSG0004253.idb Algorithm #1 (sum -r): 44464 18 patchSG0004253.idb Algorithm #2 (sum): 39382 18 patchSG0004253.idb MD5 checksum: 38BF992242C629E2DEE08F9E3A126F8B

Filename: patchSG0004253.sysadm_base_sw Algorithm #1 (sum -r): 20162 1680 patchSG0004253.sysadm_base_sw Algorithm #2 (sum): 4626 1680 patchSG0004253.sysadm_base_sw MD5 checksum: 0B184577E1954633CCBBE59D901060FE

Filename: patchSG0004253.sysadm_cxfs_sw Algorithm #1 (sum -r): 26183 1569 patchSG0004253.sysadm_cxfs_sw Algorithm #2 (sum): 43899 1569 patchSG0004253.sysadm_cxfs_sw MD5 checksum: CB64A03F7815E5EE06816B75DD58DA2E

Filename: README.patch.4254 Algorithm #1 (sum -r): 08556 23 README.patch.4254 Algorithm #2 (sum): 54378 23 README.patch.4254 MD5 checksum: E7DDAC48F0D0463A609176CF781331EB

Filename: patchSG0004254 Algorithm #1 (sum -r): 59698 18 patchSG0004254 Algorithm #2 (sum): 2027 18 patchSG0004254 MD5 checksum: A01A811C11139A47BF4D05930CABDF4D

Filename: patchSG0004254.cluster_admin_sw Algorithm #1 (sum -r): 60527 1582 patchSG0004254.cluster_admin_sw Algorithm #2 (sum): 18153 1582 patchSG0004254.cluster_admin_sw MD5 checksum: 75EEDC2B94FFBABBA765075DCADE45A8

Filename: patchSG0004254.cluster_control_sw Algorithm #1 (sum -r): 04205 3498 patchSG0004254.cluster_control_sw Algorithm #2 (sum): 57434 3498 patchSG0004254.cluster_control_sw MD5 checksum: 775EAF2E955DACBB42AB641F02A46220

Filename: patchSG0004254.cluster_services_sw Algorithm #1 (sum -r): 08341 2218 patchSG0004254.cluster_services_sw Algorithm #2 (sum): 11236 2218 patchSG0004254.cluster_services_sw MD5 checksum: D83BEBEF84553EF40370D6F0D3086FBB

Filename: patchSG0004254.cxfs_sw Algorithm #1 (sum -r): 16484 7548 patchSG0004254.cxfs_sw Algorithm #2 (sum): 65351 7548 patchSG0004254.cxfs_sw MD5 checksum: B9C9FE0FFA3C1D5DD2923ED5F8DE8407

Filename: patchSG0004254.eoe_sw Algorithm #1 (sum -r): 08488 4083 patchSG0004254.eoe_sw Algorithm #2 (sum): 35652 4083 patchSG0004254.eoe_sw MD5 checksum: 058FF0663BD376F7FA8EB52862A3CFDF

Filename: patchSG0004254.idb Algorithm #1 (sum -r): 23445 23 patchSG0004254.idb Algorithm #2 (sum): 20069 23 patchSG0004254.idb MD5 checksum: 66CA44FB96445595D0F276C641DEED83

Filename: patchSG0004254.sysadm_base_sw Algorithm #1 (sum -r): 52860 1703 patchSG0004254.sysadm_base_sw Algorithm #2 (sum): 29501 1703 patchSG0004254.sysadm_base_sw MD5 checksum: FAE8ABB6798022398A0ACD24C45CF8A3

Filename: patchSG0004254.sysadm_cxfs_sw Algorithm #1 (sum -r): 02510 1664 patchSG0004254.sysadm_cxfs_sw Algorithm #2 (sum): 456 1664 patchSG0004254.sysadm_cxfs_sw MD5 checksum: 615D790FDD1E1D9712542B208F443688

  • --- References ---

SGI Security Advisories can be found at: and

SGI Security Patches can be found at: and

SGI patches for IRIX can be found at the following patch servers: and

SGI freeware updates for IRIX can be found at:

SGI fixes for SGI open sourced code can be found on:

SGI patches and RPMs for Linux can be found at: or

SGI patches for Windows NT or 2000 can be found at:

IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at: and

IRIX 6.5 Maintenance Release Streams can be found at:

IRIX 6.5 Software Update CDs can be obtained from:

The primary SGI anonymous FTP site for security advisories and patches is ( Security advisories and patches are located under the URL

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

  • --- Acknowledgments ----

SGI wishes to thank Marc Olzheim, Sven Berkvens and the users of the Internet Community at large for their assistance in this matter.

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

If there are questions about this document, email can be sent to


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 ( Security advisories and patches are located under the URL

The SGI Security Headquarters Web page is accessible at the URL:

For issues with the patches on the FTP sites, email can be sent to

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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 ( or by sending email to SGI as outlined below.

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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.


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