发布时间 :2004-12-16 00:00:00
修订时间 :2008-09-05 16:40:59

[原文]Multiple syscalls in the compat subsystem for NetBSD before 2.0 allow local users to cause a denial of service (kernel crash) via a large signal number to (1) xxx_sys_kill, (2) xxx_sys_sigaction, and possibly other translation functions.

[CNNVD]NetBSD compat子系统服务拒绝(内核崩溃)漏洞(CNNVD-200412-072)

        NetBSD 2.0之前版本的compat的子系统存在多个系统调用,本地用户借助(1)xxx_sys_kill, (2) xxx_sys_sigaction,和可能的其他翻译函数的超大信号数字导致服务拒绝(内核崩溃)。

- 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:netbsd:netbsd:1.5.2NetBSD 1.5.2
cpe:/o:netbsd:netbsd:1.5.3NetBSD 1.5.3
cpe:/o:netbsd:netbsd:1.5.1NetBSD 1.5.1
cpe:/o:netbsd:netbsd:1.6.1NetBSD 1.6.1
cpe:/o:netbsd:netbsd:1.5NetBSD 1.5
cpe:/o:netbsd:netbsd:1.6NetBSD 1.6
cpe:/o:netbsd:netbsd:1.6.2NetBSD 1.6.2

- 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
(VENDOR_ADVISORY)  XF  netbsd-compat-gain-privileges(18564)

- 漏洞信息

NetBSD compat子系统服务拒绝(内核崩溃)漏洞
低危 未知
2004-12-16 00:00:00 2005-10-20 00:00:00
        NetBSD 2.0之前版本的compat的子系统存在多个系统调用,本地用户借助(1)xxx_sys_kill, (2) xxx_sys_sigaction,和可能的其他翻译函数的超大信号数字导致服务拒绝(内核崩溃)。

- 公告与补丁


- 漏洞信息

NetBSD compat Translation Function Local DoS
Local Access Required Denial of Service
Loss of Availability
Exploit Public

- 漏洞描述

NetBSD contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when a malicious user passes an improper syscall argument to a translation function that performs unsafe operations. The issue is also triggered when a malicious user executes a specially-crafted foreign binary. This flaw can cause kernel traps resulting in a loss of availablity.

- 时间线

2004-12-16 Unknow
2004-12-16 Unknow

- 解决方案

Upgrade to version 2.0 or 1.6.2 after the correction date, as it has been reported to fix this vulnerability. In addition, NetBSD can be patched from files on CVS.

- 相关参考

- 漏洞作者