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CVE-2003-0653

5.0 · MEDIUM

The OSI networking kernel (sys/netiso) in NetBSD 1.6.1 and earlier does not use a BSD-required "PKTHDR" mbuf when sending certain error responses to the sender of an OSI packet, which allows remote…

Published Aug 27, 2003netbsdEPSS 1.27%

Overview

CVE-2003-0653 is a medium-severity vulnerability affecting netbsd netbsd. It was published on August 27, 2003 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The OSI networking kernel (sys/netiso) in NetBSD 1.6.1 and earlier does not use a BSD-required "PKTHDR" mbuf when sending certain error responses to the sender of an OSI packet, which allows remote attackers to cause a denial of service (kernel panic or crash) via certain OSI packets.

Remediation

Check the references section for vendor advisories and patches from netbsd. Update netbsd 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

References

Refftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-010.txt.ascRefftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2003-010.txt.asc

How CyberStrike helps

Frequently asked questions

What is CVE-2003-0653?

CVE-2003-0653 is a medium-severity vulnerability affecting netbsd netbsd. It was published on August 27, 2003 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2003-0653?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2003-0653?

Check the references section for vendor advisories and patches from netbsd. Update netbsd 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-2003-0653?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2003-0653 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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