发布时间 :2005-01-13 00:00:00
修订时间 :2008-09-05 16:47:10

[原文]The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout.

[CNNVD]OpenBSD tcp_input.c 拒绝服务漏洞(CNNVD-200501-240)

        OpenBSD 是一个从BSD衍生出的类Unix操作系统。
        OpenBSD 3.5和3.6中的TCP堆栈(tcp_input.c)存在拒绝服务漏洞。

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
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: [--]
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:2.0OpenBSD 2.0
cpe:/o:openbsd:openbsd:2.4OpenBSD 2.4
cpe:/o:openbsd:openbsd:3.4OpenBSD 3.4
cpe:/o:openbsd:openbsd:3.3OpenBSD 3.3
cpe:/o:openbsd:openbsd:3.1OpenBSD 3.1
cpe:/o:openbsd:openbsd:3.0OpenBSD 3.0
cpe:/o:openbsd:openbsd:3.6OpenBSD 3.6
cpe:/o:openbsd:openbsd:2.2OpenBSD 2.2
cpe:/o:openbsd:openbsd:2.3OpenBSD 2.3
cpe:/o:openbsd:openbsd:2.1OpenBSD 2.1
cpe:/o:openbsd:openbsd:2.8OpenBSD 2.8
cpe:/o:openbsd:openbsd:2.5OpenBSD 2.5
cpe:/o:openbsd:openbsd:3.2OpenBSD 3.2
cpe:/o:openbsd:openbsd:2.9OpenBSD 2.9
cpe:/o:openbsd:openbsd:3.5OpenBSD 3.5
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)


- 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)  OPENBSD  20050111 027: RELIABILITY FIX: January 11, 2005

- 漏洞信息

OpenBSD tcp_input.c 拒绝服务漏洞
中危 其他
2005-01-13 00:00:00 2005-10-20 00:00:00
        OpenBSD 是一个从BSD衍生出的类Unix操作系统。
        OpenBSD 3.5和3.6中的TCP堆栈(tcp_input.c)存在拒绝服务漏洞。

- 公告与补丁


- 漏洞信息

OpenBSD TCP Retransmission Timeout Calculation DoS
Remote / Network Access Denial of Service, Input Manipulation
Loss of Availability
Exploit Unknown

- 漏洞描述

OpenBSD contains a flaw that may allow a remote denial of service. The issue is triggered when an attacker sends packets with specific values in the TCP timestamp option, and will result in loss of availability for the platform.

- 时间线

2005-01-10 Unknow
2005-03-15 Unknow

- 解决方案

Currently, there are no known workarounds or upgrades to correct this issue. However, OpenBSD has released a patch to address this vulnerability.

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

OpenBSD TCP Timestamp Remote Denial Of Service Vulnerability
Failure to Handle Exceptional Conditions 12250
Yes No
2005-01-13 12:00:00 2009-07-12 09:27:00
The individual or individuals responsible for the discovery of this issue are currently unknown; the vendor disclosed this issue.

- 受影响的程序版本

OpenBSD OpenBSD 2.9
OpenBSD OpenBSD 2.8
OpenBSD OpenBSD 2.7
OpenBSD OpenBSD 2.6
OpenBSD OpenBSD 2.5
OpenBSD OpenBSD 2.4
OpenBSD OpenBSD 2.3
OpenBSD OpenBSD 2.2
OpenBSD OpenBSD 2.1
OpenBSD OpenBSD 2.0
OpenBSD OpenBSD 3.6
OpenBSD OpenBSD 3.5
OpenBSD OpenBSD 3.4
OpenBSD OpenBSD 3.3
OpenBSD OpenBSD 3.2
OpenBSD OpenBSD 3.1
OpenBSD OpenBSD 3.0
OpenBSD OpenBSD -current

- 漏洞讨论

A remote denial of service vulnerability affects the TCP timestamp processing functionality of OpenBSD. This issue is due to a failure of the system to properly handle exceptional network data.

A remote attacker may leverage this issue to cause the kernel to panic on an affected computer, triggering a denial of service condition.

- 漏洞利用

The following exploit has been made available by __blf 2005 RusH Security Team:

- 解决方案

OpenBSD has released the following patches dealing with this issue:

OpenBSD OpenBSD 3.5

OpenBSD OpenBSD 3.6

- 相关参考