CVE-2001-0063
CVSS7.2
发布时间 :2001-02-12 00:00:00
修订时间 :2008-09-05 16:23:10
NMCO    

[原文]procfs in FreeBSD and possibly other operating systems allows local users to bypass access control restrictions for a jail environment and gain additional privileges.


[CNNVD]FreeBSD procfs权限许可和访问控制漏洞(CNNVD-200102-010)

        FreeBSD和可能其他操作系统的procfs存在漏洞。本地用户可以利用该漏洞绕过jail环境变量访问控制限制并提升额外特权。

- CVSS (基础分值)

CVSS分值: 7.2 [严重(HIGH)]
机密性影响: COMPLETE [完全的信息泄露导致所有系统文件暴露]
完整性影响: COMPLETE [系统完整性可被完全破坏]
可用性影响: COMPLETE [可能导致系统完全宕机]
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:4.2FreeBSD 4.2
cpe:/o:freebsd:freebsd:4.1.1FreeBSD 4.1.1
cpe:/o:freebsd:freebsd:3.5.1FreeBSD 3.5.1
cpe:/o:freebsd:freebsd:4.1FreeBSD 4.1

- 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-2001-0063
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-0063
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200102-010
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/2132
(VENDOR_ADVISORY)  BID  2132
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:77.procfs.v1.1.asc
(VENDOR_ADVISORY)  FREEBSD  FreeBSD-SA-00:77
http://xforce.iss.net/xforce/xfdb/6108
(UNKNOWN)  XF  procfs-access-control-bo(6108)
http://www.osvdb.org/1691
(UNKNOWN)  OSVDB  1691

- 漏洞信息

FreeBSD procfs权限许可和访问控制漏洞
高危 未知
2001-02-12 00:00:00 2005-07-26 00:00:00
本地  
        FreeBSD和可能其他操作系统的procfs存在漏洞。本地用户可以利用该漏洞绕过jail环境变量访问控制限制并提升额外特权。

- 公告与补丁

        

- 漏洞信息

1691
FreeBSD procfs jail() Access Restriction Bypass Local Privilege Escalation
Local Access Required Input Manipulation
Loss of Confidentiality, Loss of Integrity
Exploit Unknown

- 漏洞描述

FreeBSD contains a flaw that may allow a users to break out of jail virtual machines. The issue is due to an unchecked buffer in the kernel that can be exploited by jailed users. By overflowing this buffer with specially crafted code, a jailed user could bypass any restrictions normally enforced by the jailed environment and execute arbitrary code or commands, including lowering the system security level.

- 时间线

2000-12-18 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 3.5.1-STABLE, 4.2-STABLE or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workarounds: 1. Unmount all procfs filesystems which are visible from within jail environments 2. Remove the "options PROCFS" line from your kernel configuration file and compile a new kernel.

- 相关参考

- 漏洞作者

 

 

关于SCAP中文社区

SCAP中文社区是国内第一个以SCAP为主题的中文开放社区。了解更多信息,请查阅[关于本站]

版权声明

CVE/CWE/OVAL均为MITRE公司的注册商标,它们的官方数据源均保存在MITRE公司的相关网站