发布时间 :2003-10-06 00:00:00
修订时间 :2008-09-10 15:20:06

[原文]Unknown vulnerability in NFS for SGI IRIX 6.5.21 and earlier may allow an NFS client to bypass read-only restrictions.

[CNNVD]SGI IRIX NFS Export未授权Read/Write mount漏洞(CNNVD-200310-021)

        SGI IRIX的NFS实现存在漏洞,远程攻击者可以利用这个漏洞对只读文件系统以read/write属性挂接。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: PARTIAL [可能会导致系统文件被修改]
可用性影响: PARTIAL [可能会导致性能下降或中断资源访问]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: [--]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

cpe:/o:sgi:irix:6.5.21SGI IRIX 6.5.21
cpe:/o:sgi:irix:6.5.21mSGI IRIX 6.5.21m
cpe:/o:sgi:irix:6.5.21fSGI IRIX 6.5.21f

- OVAL (用于检测的技术细节)


- 官方数据库链接
(官方数据源) MITRE
(官方数据源) NVD
(官方数据源) CNNVD

- 其它链接及资源
(UNKNOWN)  SGI  20030901-01-P

- 漏洞信息

SGI IRIX NFS Export未授权Read/Write mount漏洞
高危 设计错误
2003-10-06 00:00:00 2005-10-20 00:00:00
        SGI IRIX的NFS实现存在漏洞,远程攻击者可以利用这个漏洞对只读文件系统以read/write属性挂接。

- 公告与补丁

        20030901-01-P:IRIX 6.5.21 NFS export vulnerability
         系统版本 是否受影响 补丁号 备注
         ---------- ----------- ------- -------------
         IRIX 3.x 未知 备注 1
         IRIX 4.x 未知 备注 1
         IRIX 5.x 未知 备注 1
         IRIX 6.0.x 未知 备注 1
         IRIX 6.1 未知 备注 1
         IRIX 6.2 未知 备注 1
         IRIX 6.3 未知 备注 1
         IRIX 6.4 未知 备注 1
         IRIX 6.5 不 备注 1
         IRIX 6.5.1 不 备注 1
         IRIX 6.5.2 不 备注 1
         IRIX 6.5.3 不 备注 1
         IRIX 6.5.4 不 备注 1
         IRIX 6.5.5 不 备注 1
         IRIX 6.5.6 不 备注 1
         IRIX 6.5.7 不 备注 1
         IRIX 6.5.8 不 备注 1
         IRIX 6.5.9 不 备注 1
         IRIX 6.5.10 不 备注 1
         IRIX 6.5.11 不 备注 1
         IRIX 6.5.12 不 备注 1
         IRIX 6.5.13 不 备注 1
         IRIX 6.5.14 不 备注 1
         IRIX 6.5.15 不 备注 1
         IRIX 6.5.16 不 备注 1
         IRIX 6.5.17 不 备注 1
         IRIX 6.5.18m 不 备注 2
         IRIX 6.5.18f 不 备注 2
         IRIX 6.5.19m 不 备注 2
         IRIX 6.5.19f 不 备注 2
         IRIX 6.5.20m 不 备注 2
         IRIX 6.5.20f 不 备注 2
         IRIX 6.5.21m 是 5317 备注 2 & 3
         IRIX 6.5.21f 是 5318 备注 2 & 3
         IRIX 6.5.22 &nb

- 漏洞信息 (F31672)

HexView Security Advisory 2003-09-01.01 (PacketStormID:F31672)
2003-09-18 00:00:00

SGI Security Advisory 20030901-01-P - It has been reported that under certain conditions a NFS client can avoid read-only restrictions on filesystems exported via NFS from a server running IRIX 6.5.21 and mount them in read/write mode.


                           SGI Security Advisory

  Title:      IRIX 6.5.21 NFS export vulnerability
  Number:     20030901-01-P
  Date:       September 16, 2003
  Reference:  CVE CAN-2003-0680
  Reference:  SGI BUG 899846
  Fixed in:   Patches 5317 and 5318 for IRIX 6.5.21

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 ---
- -----------------------

It has been reported that under certain conditions a NFS client can
avoid read-only restrictions on filesystems exported via NFS from a
server running IRIX 6.5.21 and mount them in read/write mode.

The Common Vulnerabilities and Exposures project ( has
assigned the name CAN-2003-0680 to this vulnerability:

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.

- --------------
- --- Impact ---
- --------------

To determine the version of IRIX you are running, execute the following

  # /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.

- ----------------------------
- --- Temporary Workaround ---
- ----------------------------

There is no effective workaround available for this vulnerability.
SGI recommends either upgrading to IRIX 6.5.22 (when available),
or installing the appropriate patch for IRIX 6.5.21 from the listing below.

- ----------------
- --- Solution ---
- ----------------

SGI has provided a series of patches for these vulnerabilities. Our
recommendation is to upgrade to IRIX 6.5.22, or install the appropriate

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          no                       Notes 1
IRIX 6.5.1        no                       Notes 1
IRIX 6.5.2        no                       Notes 1
IRIX 6.5.3        no                       Notes 1
IRIX 6.5.4        no                       Notes 1
IRIX 6.5.5        no                       Notes 1
IRIX 6.5.6        no                       Notes 1
IRIX 6.5.7        no                       Notes 1
IRIX 6.5.8        no                       Notes 1
IRIX 6.5.9        no                       Notes 1
IRIX 6.5.10       no                       Notes 1
IRIX 6.5.11       no                       Notes 1
IRIX 6.5.12       no                       Notes 1
IRIX 6.5.13       no                       Notes 1
IRIX 6.5.14       no                       Notes 1
IRIX 6.5.15       no                       Notes 1
IRIX 6.5.16       no                       Notes 1
IRIX 6.5.17       no                       Notes 1
IRIX 6.5.18m      no                       Notes 2
IRIX 6.5.18f      no                       Notes 2
IRIX 6.5.19m      no                       Notes 2
IRIX 6.5.19f      no                       Notes 2
IRIX 6.5.20m      no                       Notes 2
IRIX 6.5.20f      no                       Notes 2
IRIX 6.5.21m      yes         5317         Notes 2 & 3
IRIX 6.5.21f      yes         5318         Notes 2 & 3
IRIX 6.5.22       no


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

     3) Install the required patch(es) based on your operating release.

              ##### Patch File Checksums ####
Filename:                 README.patch.5317
Algorithm #1 (sum -r):    58922 9 README.patch.5317
Algorithm #2 (sum):       7391 9 README.patch.5317
MD5 checksum:             50A9B7DC82EFF1FAF96AC77DB44C5F58

Filename:                 patchSG0005317
Algorithm #1 (sum -r):    43256 2 patchSG0005317
Algorithm #2 (sum):       62576 2 patchSG0005317
MD5 checksum:             1C50658B51328CF571CB2EBF30A1252D

Filename:                 patchSG0005317.eoe_sw
Algorithm #1 (sum -r):    55756 2261 patchSG0005317.eoe_sw
Algorithm #2 (sum):       24968 2261 patchSG0005317.eoe_sw
MD5 checksum:             FF2AE9E7C86A717190B4DDE40EEBC8DD

Filename:                 patchSG0005317.idb
Algorithm #1 (sum -r):    61112 26 patchSG0005317.idb
Algorithm #2 (sum):       8958 26 patchSG0005317.idb
MD5 checksum:             6775EFB2B97576F07803FAE9D77C75B9

Filename:                 patchSG0005317.nfs_sw
Algorithm #1 (sum -r):    29306 5331 patchSG0005317.nfs_sw
Algorithm #2 (sum):       62999 5331 patchSG0005317.nfs_sw
MD5 checksum:             6415ADF1E4ADFB0D412AD7083D6CB2B8

Filename:                 README.patch.5318
Algorithm #1 (sum -r):    11334 9 README.patch.5318
Algorithm #2 (sum):       7077 9 README.patch.5318
MD5 checksum:             0180730DDEC857D08021602A6C4F19B9

Filename:                 patchSG0005318
Algorithm #1 (sum -r):    17201 2 patchSG0005318
Algorithm #2 (sum):       65068 2 patchSG0005318
MD5 checksum:             E5230214F4D45719E089E66242377053

Filename:                 patchSG0005318.eoe_sw
Algorithm #1 (sum -r):    61230 2281 patchSG0005318.eoe_sw
Algorithm #2 (sum):       9254 2281 patchSG0005318.eoe_sw
MD5 checksum:             7444298E987C8556DFEBF81FA199DD85

Filename:                 patchSG0005318.idb
Algorithm #1 (sum -r):    11527 26 patchSG0005318.idb
Algorithm #2 (sum):       8870 26 patchSG0005318.idb
MD5 checksum:             D5CD8B34434E78BE55D3411FDB053F09

Filename:                 patchSG0005318.nfs_sw
Algorithm #1 (sum -r):    30425 5435 patchSG0005318.nfs_sw
Algorithm #2 (sum):       9952 5435 patchSG0005318.nfs_sw
MD5 checksum:             FE7D3F51EF9183A605FBD463760E8A3E

- -------------
- --- Links ---
- -------------

Patches are available via the web, anonymous FTP and from your SGI
service/support provider.

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:

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.

- -----------------------------------------
- --- 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

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


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.

% mail
subscribe wiretap <YourEmailAddress such as >

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.


SGI provides a comprehensive customer World Wide Web site. This site is
located at .


If there are general security questions on SGI systems, email can be
sent to

For reporting *NEW* SGI security issues, email can be sent to 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.

Version: 2.6.2


- 漏洞信息

IRIX NFS Client Read-Only Restriction Bypass
Remote / Network Access Misconfiguration
Loss of Integrity

- 漏洞描述

IRIX contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when a NFS client can avoid read-only restrictions on filesystems exported via NFS and mount them in read/write mode. This flaw may lead to a loss of integrity.

- 时间线

2003-09-16 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 6.5.22 or higher, as it has been reported to fix this vulnerability. In addition, Silicon Graphics, Inc. has released patches for some older versions.

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

SGI IRIX NFS Export Unauthorized Read/Write Mount Vulnerability
Design Error 8638
Yes No
2003-09-16 12:00:00 2009-07-11 11:56:00
This issue was reported by SGI.

- 受影响的程序版本

SGI IRIX 6.5.21 m
SGI IRIX 6.5.21 f
SGI IRIX 6.5.21
SGI IRIX 6.5.22

- 不受影响的程序版本

SGI IRIX 6.5.22

- 漏洞讨论

SGI IRIX is prone to an issue in its NFS implementation that could allow read-only file systems to be mounted read/write. This could permit unauthorized write access to said file systems.

This vulnerability is reported to only affect SGI IRIX 6.5.21.

- 漏洞利用

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: &lt;;.

- 解决方案

SGI recommends users to upgrade to IRIX 6.5.22 or to apply patches 5317 and 5318 for IRIX 6.5.21. Further details may be found in the attached SGI advisory.

- 相关参考