CVE-2003-0795

Name: CVE-2003-0795
Creator: NVD / NIST
Published: 2003-12-15T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.23%

Last modified Jun 16, 2026

CVE-2003-0795 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 8.23% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

8.23%

94.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Gnu	Zebra	0.91a
Gnu	Zebra	0.92a
Gnu	Zebra	0.93a
Gnu	Zebra	0.93b
Quagga	Quagga	<= 0.96.3
Quagga	Quagga	0.95
Quagga	Quagga	0.96
Quagga	Quagga	0.96.1
Quagga	Quagga	0.96.2
Sgi	Propack	2.2.1
Sgi	Propack	2.3

References

http://marc.info/?l=bugtraq&m=106883387304266&w=2
http://secunia.com/advisories/10563Vendor Advisory
http://www.debian.org/security/2004/dsa-415Patch, Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-305.htmlPatch, Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-307.htmlPatch, Vendor Advisory
http://marc.info/?l=bugtraq&m=106883387304266&w=2
http://secunia.com/advisories/10563Vendor Advisory
http://www.debian.org/security/2004/dsa-415Patch, Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-305.htmlPatch, Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-307.htmlPatch, Vendor Advisory

Timeline

Published: Dec 15, 2003
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2003-0795?

How severe is CVE-2003-0795?

Severity scoring for CVE-2003-0795 is pending analysis. The EPSS model estimates a 8.23% probability of exploitation in the next 30 days.

How do I fix CVE-2003-0795?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0795?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST