发布时间 :2001-02-12 00:00:00
修订时间 :2008-09-05 16:23:10

[原文]procfs in FreeBSD and possibly other operating systems allows local users to cause a denial of service by calling mmap on the process' own mem file, which causes the kernel to hang.

[CNNVD]FreeBSD procfs服务拒绝漏洞。(CNNVD-200102-030)


- 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:4.2FreeBSD 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)


- 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)  XF  procfs-mmap-dos(6107)

- 漏洞信息

FreeBSD procfs服务拒绝漏洞。
低危 未知
2001-02-12 00:00:00 2005-05-02 00:00:00

- 公告与补丁


- 漏洞信息

FreeBSD procfs mmap DoS
Local Access Required Denial of Service
Loss of Availability

- 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 mmap() to map the memory address of its own mem file the procfs filesystem causing the kernel to go into an infinite loop, and will result in loss of availability for the platform.

- 时间线

2000-12-18 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 3.5.1-STABLE or 4.2-STABLE dated after the correction date or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: unmount all instances of the procfs filesystem. #umount -f -a -t procfs Disable automatic mounting of procfs in /etc/fstab: #proc /proc procfs rw 0 0

- 相关参考

- 漏洞作者