CVE-2003-0683
CVSS7.5
发布时间 :2003-11-03 00:00:00
修订时间 :2008-09-05 16:34:58
NMCOS    

[原文]NFS in SGI 6.5.21m and 6.5.21f does not perform access checks in certain configurations when an /etc/exports entry uses wildcards without any hostnames or groups, which could allow attackers to bypass intended restrictions.


[CNNVD]SGI IRIX NFS Exportfs通用条目未授权访问漏洞(CNNVD-200311-010)

        
        IRIX是一款由SGI公司开发和维护的商业性质UNIX操作系统。
        SGI IRIX的NFS实现存在漏洞,远程攻击者可以利用这个漏洞未授权对文件系统进行访问。
        IRIX中在/etc/exports只包含通用字符而没有精确提供主机名或网络组限制读取访问限制时,NFS服务器就会在某些配置情况下忽略访问检查,导致攻击者未授权进行访问。
        

- 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:6.5.21mSGI 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)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0683
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2003-0683
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200311-010
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/8921
(VENDOR_ADVISORY)  BID  8921
ftp://patches.sgi.com/support/free/security/advisories/20031004-01-P
(UNKNOWN)  SGI  20031004-01-P
http://www.osvdb.org/2734
(UNKNOWN)  OSVDB  2734
http://secunia.com/advisories/10095
(UNKNOWN)  SECUNIA  10095

- 漏洞信息

SGI IRIX NFS Exportfs通用条目未授权访问漏洞
高危 访问验证错误
2003-11-03 00:00:00 2005-10-20 00:00:00
远程  
        
        IRIX是一款由SGI公司开发和维护的商业性质UNIX操作系统。
        SGI IRIX的NFS实现存在漏洞,远程攻击者可以利用这个漏洞未授权对文件系统进行访问。
        IRIX中在/etc/exports只包含通用字符而没有精确提供主机名或网络组限制读取访问限制时,NFS服务器就会在某些配置情况下忽略访问检查,导致攻击者未授权进行访问。
        

- 公告与补丁

        临时解决方法:
        如果您不能立刻安装补丁或者升级,CNNVD建议您采取以下措施以降低威胁:
        * 在/etc/exports中,更改包含访问选项,如:
        更改如下类似条目:
        /some/filesystem -access={some wildcard}
        为:
        /some/filesystem -access=localhost:{some wildcard}
        厂商补丁:
        SGI
        ---
        SGI已经为此发布了一个安全公告(20031004-01-P)以及相应补丁:
        20031004-01-P:Wildcard exportfs issue in NFS on IRIX
        链接:ftp://patches.sgi.com/support/free/security/advisories/20031004-01-P
        补丁下载:
        SGI IRIX 6.5.21 m:
        SGI Patch patch5351.tar
        ftp://patches.sgi.com/support/free/security/patches/6.5.21/patch5351.tar
        SGI IRIX 6.5.21 f:
        SGI Patch patch5352.tar
        ftp://patches.sgi.com/support/free/security/patches/6.5.21/patch5352.tar

- 漏洞信息

2734
IRIX NFS Wildcard exportfs Access Check Bypass
Local Access Required 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 malicious user bypasses Network File System (NFS) access checks when the root,rw or access options in /etc/exports contain only wildcards (IP addresses or domain suffixes) and no explicit hostnames or netgroups. This flaw may lead to a loss of integrity.

- 时间线

2003-10-28 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 Exportfs Wildcard Entry Unauthorized Access Vulnerability
Access Validation Error 8921
Yes No
2003-10-28 12:00:00 2009-07-11 11:56:00
This vulnerability was announced by SGI.

- 受影响的程序版本

SGI IRIX 6.5.21 m
SGI IRIX 6.5.21 f

- 漏洞讨论

A vulnerability has been discovered on Irix systems when specific wild card entries are present within exportfs configration files. When these entries are in place, it is said that the NFS server may fail to carry out some access validation checks, potentially allowing unauthorized access.

- 漏洞利用

No exploit is required.

- 解决方案

SGI has released patches to address this issue.


SGI IRIX 6.5.21 f

SGI IRIX 6.5.21 m

- 相关参考

     

     

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