发布时间 :2000-04-24 00:00:00
修订时间 :2008-09-10 15:04:10

[原文]ZoneAlarm 2.1.10 and earlier does not filter UDP packets with a source port of 67, which allows remote attackers to bypass the firewall rules.

[CNNVD]ZoneAlarm Personal防火墙的67端口漏洞(CNNVD-200004-066)

        ZoneAlarm 2.1.10和早期版本在67源端口没有过滤UDP包存在漏洞,远程攻击者可以利用这个漏洞绕过防火墙规则。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: PARTIAL [可能会导致系统文件被修改]
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)


- 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)  BUGTRAQ  20000420 ZoneAlarm
(UNKNOWN)  BID  1137

- 漏洞信息

ZoneAlarm Personal防火墙的67端口漏洞
高危 其他
2000-04-24 00:00:00 2005-05-02 00:00:00
        ZoneAlarm 2.1.10和早期版本在67源端口没有过滤UDP包存在漏洞,远程攻击者可以利用这个漏洞绕过防火墙规则。

- 公告与补丁

        Zone Labs, as of April 25 2000 is offering a Beta to correct this problem:
        Zone Labs Support issued the following statement to the Bugtraq mailing list on 12 May 2000.
        This is the company position on the Port 67 issue....
        The port 67 vulnerability has been eliminated. The upgraded version of ZoneAlarm contains the fix and is available from
        Previously, ZoneAlarm did not prevent TCP or UDP packets from entering the computer through port 67. Port 67 was deliberately left open to avoid instabilities encountered on Windows NT machines using DHCP.
        We felt confident that this did not compromise your security or the security of our other users. ZoneAlarm, in addition to its firewall capabilities, provides protection against hackers through its unique application control feature. Our product only allows applications the user specifically approves to communicate via the Internet. Even if a port appears to be open for traffic from the outside, it is in fact closed to all unauthorized traffic. Therefore port 67 could not (and cannot) be co-opted unknowingly into communicating your private information to a hacker via a Trojan horse. Our two measures of security taken together provide the utmost protection for our users.
        Best regards Zone Labs Support

- 漏洞信息 (19871)

Zone Labs ZoneAlarm 2.1 Personal Firewall Port 67 Vulnerability (EDBID:19871)
windows remote
2000-04-24 Verified
0 Wally Whacker
N/A [点击下载]

Certain versions of Zone Labs personal Firewall have a vulnerability which allows malicious users to port scan the firewall without being detected. In particular if the port scan originates from source port 67 on the attacking host the ZoneAlarm fails to register the attack.

nmap -g67 -P0 -p130-140 -sU <targethost>		

- 漏洞信息

ZoneAlarm Personal Firewall UDP Source Port 67 Bypass
Remote / Network Access Input Manipulation, Misconfiguration
Loss of Confidentiality Upgrade
Exploit Public

- 漏洞描述

ZoneAlarm contains a flaw that may allow a remote attacker to bypass the ruleset. The issue is due to ZoneAlarm not monitoring and alerting UDP traffic with a source port of 67. This allows an attacker to bypass the firewall to reach protected hosts without setting off warnings on the firewall.

- 时间线

2000-04-20 Unknow
2000-04-20 Unknow

- 解决方案

Upgrade to version 2.1.25 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者