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CVE-2003-0795

5.0 · MEDIUM

The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a deni…

Published Dec 15, 2003gnuCWE-20EPSS 8.43%

Overview

CVE-2003-0795 is a medium-severity vulnerability affecting gnu zebra. It was published on December 15, 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 vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.

Remediation

Check the references section for vendor advisories and patches from gnu. Update zebra 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
quaggaquagga0Affected

References

Refmarc.info/?l=bugtraq&m=106883387304266&w=2Refsecunia.com/advisories/10563Refwww.debian.org/security/2004/dsa-415Refwww.redhat.com/support/errata/RHSA-2003-305.htmlRefwww.redhat.com/support/errata/RHSA-2003-307.htmlRefmarc.info/?l=bugtraq&m=106883387304266&w=2Refsecunia.com/advisories/10563Refwww.debian.org/security/2004/dsa-415Refwww.redhat.com/support/errata/RHSA-2003-305.htmlRefwww.redhat.com/support/errata/RHSA-2003-307.html

How CyberStrike helps

Frequently asked questions

What is CVE-2003-0795?

CVE-2003-0795 is a medium-severity vulnerability affecting gnu zebra. It was published on December 15, 2003 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2003-0795?

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-2003-0795?

Check the references section for vendor advisories and patches from gnu. Update zebra 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-2003-0795?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2003-0795 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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