CVE-2001-1047
CVSS1.2
发布时间 :2001-06-02 00:00:00
修订时间 :2009-08-21 00:07:41
NMCOS    

[原文]Race condition in OpenBSD VFS allows local users to cause a denial of service (kernel panic) by (1) creating a pipe in one thread and causing another thread to set one of the file descriptors to NULL via a close, or (2) calling dup2 on a file descriptor in one process, then setting the descriptor to NULL via a close in another process that is created via rfork.


[CNNVD]OpenBSD Pipe VFS 竞争环境拒绝服务攻击(CNNVD-200106-047)

        CVE(CAN) ID: CAN-2001-1047
        
        
        
        OpenBSD 是基于BSD系列的操作系统,由OpenBSD project负责维护、分发。其设计目
        
        标是提供一个BSD操作系统的安全实现,增加了大量安全特性。
        
        
        
        上述版本的OpenBSD存在设计上的缺陷。进程中一个线程调用pipe(2)系统调用获取两
        
        个文件句柄,进程中另外一个线程可以设置其中一个文件句柄为NULL,最终将导致内
        
        核恐慌(kernel panic)、系统崩溃,形成本地拒绝服务攻击
        
        
        
        <* 来源:Alexander Viro (viro@math.psu.edu) *>
        
        

- CVSS (基础分值)

CVSS分值: 1.2 [轻微(LOW)]
机密性影响: NONE [对系统的机密性无影响]
完整性影响: NONE [不会对系统完整性产生影响]
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: HIGH [漏洞利用存在特定的访问条件]
攻击向量: LOCAL [漏洞利用需要具有物理访问权限或本地帐户]
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:openbsd:openbsd:2.8OpenBSD 2.8
cpe:/o:openbsd:openbsd:2.9OpenBSD 2.9
cpe:/o:openbsd:openbsd:2.6OpenBSD 2.6
cpe:/o:openbsd:openbsd:2.7OpenBSD 2.7

- 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-2001-1047
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-1047
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200106-047
(官方数据源) CNNVD

- 其它链接及资源

http://xforce.iss.net/static/6661.php
(VENDOR_ADVISORY)  XF  openbsd-pipe-race-dos(6661)
http://xforce.iss.net/static/6660.php
(VENDOR_ADVISORY)  XF  openbsd-dup2-race-dos(6660)
http://www.securityfocus.com/bid/2818
(VENDOR_ADVISORY)  BID  2818
http://www.securityfocus.com/bid/2817
(VENDOR_ADVISORY)  BID  2817
http://seclists.org/bugtraq/2001/Jun/0020.html
(UNKNOWN)  BUGTRAQ  20010602 Locally exploitable races in OpenBSD VFS

- 漏洞信息

OpenBSD Pipe VFS 竞争环境拒绝服务攻击
低危 竞争条件
2001-06-02 00:00:00 2009-08-21 00:00:00
本地  
        CVE(CAN) ID: CAN-2001-1047
        
        
        
        OpenBSD 是基于BSD系列的操作系统,由OpenBSD project负责维护、分发。其设计目
        
        标是提供一个BSD操作系统的安全实现,增加了大量安全特性。
        
        
        
        上述版本的OpenBSD存在设计上的缺陷。进程中一个线程调用pipe(2)系统调用获取两
        
        个文件句柄,进程中另外一个线程可以设置其中一个文件句柄为NULL,最终将导致内
        
        核恐慌(kernel panic)、系统崩溃,形成本地拒绝服务攻击
        
        
        
        <* 来源:Alexander Viro (viro@math.psu.edu) *>
        
        

- 公告与补丁

        
        
        厂商补丁:
        
        
        
        目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商
        
        的主页以获取最新版本:
        
        
        http://www.openbsd.org/

        

- 漏洞信息

7551
OpenBSD VFS dup2 File Descriptor DoS
Local Access Required Denial of Service
Loss of Availability

- 漏洞描述

OpenBSD contains a flaw that may allow a local denial of service. The issue is triggered when dup2 is called on a file descriptor in one process then that descriptor is set to NULL via a close in another process that is created via rfork, which will cause a kernel panic and will result in loss of availability for the platform.

- 时间线

2001-06-02 Unknow
Unknow Unknow

- 解决方案

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

- 相关参考

- 漏洞作者

- 漏洞信息

OpenBSD Pipe VFS Race Condition Denial Of Service Vulnerability
Race Condition Error 2818
No Yes
2001-06-02 12:00:00 2009-07-11 06:06:00
This vulnerability was announced to Bugtraq by Alexander Viro <viro@math.psu.edu> on June 2, 2001.

- 受影响的程序版本

OpenBSD OpenBSD 2.9
OpenBSD OpenBSD 2.8
OpenBSD OpenBSD 2.7
OpenBSD OpenBSD 2.6

- 漏洞讨论

OpenBSD is a BSD based operating system maintained and distributed by the OpenBSD project. OpenBSD has been designed as a secure implementation of the BSD Operating System, and offers numerous security features.

A problem in the kernel could make it possible for a local user to cause a kernel panic. A thread within a process may open a pipe, creating two file descriptors. It is possible for another thread to set one of the file descriptors to null, causing a kernel panic when the blocking process dereferences the file descriptors used for the pipe.

Therefore, it possible for a local user to cause a kernel panic, thus denying service to legitmate users of the system.

- 漏洞利用

Currently the SecurityFocus staff 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: vuldb@securityfocus.com &lt;mailto:vuldb@securityfocus.com&gt;.

- 解决方案

Currently the SecurityFocus staff are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 相关参考

     

     

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