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CVE-2000-0339

7.5 · HIGH

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.

Published Apr 24, 2000zonelabsEPSS 7.26%

Overview

CVE-2000-0339 is a high-severity vulnerability affecting zonelabs zonealarm. It was published on April 24, 2000 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from zonelabs. Update zonealarm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
zonelabszonealarm0Affected

References

Refwww.osvdb.org/1294Refwww.securityfocus.com/bid/1137Refwww.securityfocus.com/templates/archive.pike?list=1&msg=20000421044123.2353.qmail%40securityfocus.comRefwww.osvdb.org/1294Refwww.securityfocus.com/bid/1137Refwww.securityfocus.com/templates/archive.pike?list=1&msg=20000421044123.2353.qmail%40securityfocus.com

How CyberStrike helps

Frequently asked questions

What is CVE-2000-0339?

CVE-2000-0339 is a high-severity vulnerability affecting zonelabs zonealarm. It was published on April 24, 2000 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2000-0339?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2000-0339?

Check the references section for vendor advisories and patches from zonelabs. Update zonealarm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2000-0339?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2000-0339 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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