CVE-2002-1667
CVSS2.1
发布时间 :2002-12-31 00:00:00
修订时间 :2008-09-05 16:31:12
NMCO    

[原文]The virtual memory management system in FreeBSD 4.5-RELEASE and earlier does not properly check the existence of a VM object during page invalidation, which allows local users to cause a denial of service (crash) by calling msync on an unaccessed memory map created with MAP_ANON and MAP_NOSYNC flags.


[CNNVD]FreeBSD服务拒绝漏洞(CNNVD-200212-540)

        FreeBSD 4.5-RELEASE及之前版本的虚拟内存管理系统在页面无效期间不能正确地检查VM对象的存在,本地用户可以通过调用创建MAP_ANON和MAP_NOSYNC标记的未被访问的内存映像里的msync来导致服务拒绝(崩溃)。

- CVSS (基础分值)

CVSS分值: 2.1 [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: LOW [漏洞利用没有访问限制 ]
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:freebsd:freebsd:4.5:stable
cpe:/o:freebsd:freebsd:4.5:release

- 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-2002-1667
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2002-1667
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200212-540
(官方数据源) CNNVD

- 其它链接及资源

http://xforce.iss.net/xforce/xfdb/8921
(VENDOR_ADVISORY)  XF  freebsd-mmap-msync-dos(8921)
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:22.mmap.asc
(VENDOR_ADVISORY)  FREEBSD  FreeBSD-SA-02:22

- 漏洞信息

FreeBSD服务拒绝漏洞
低危 未知
2002-12-31 00:00:00 2005-10-20 00:00:00
本地  
        FreeBSD 4.5-RELEASE及之前版本的虚拟内存管理系统在页面无效期间不能正确地检查VM对象的存在,本地用户可以通过调用创建MAP_ANON和MAP_NOSYNC标记的未被访问的内存映像里的msync来导致服务拒绝(崩溃)。

- 公告与补丁

        

- 漏洞信息

20823
FreeBSD Virtual Memory Management msync mmap Local DoS
Local Access Required Denial of Service
Loss of Availability
Exploit Public

- 漏洞描述

FreeBSD contains a flaw that may allow a local denial of service. The issue is triggered when a malicious user calls msync(2) on an anonymous, asynchronous memory map (i.e. created using the mmap flags MAP_ANON and MAP_NOSYNC) which had not been accessed previously, and will result in loss of availability for the platform.

- 时间线

2002-04-18 Unknow
2002-04-18 Unknow

- 解决方案

Upgrade to version 4.5-STABLE; or to either of the RELENG_4_5 (4.5-RELEASE-p3) or RELENG_4_4 (4.4-RELEASE-p10) security branches dated after the respective correction dates, as it has been reported to fix this vulnerability. In addition, FreeBSD has released a patch for some older versions.

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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