Home/CVE/The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place
CVE

CVE-2003-0795

The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place

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.

MEDIUM · CVSS 5 EPSS 0.08008
Schedule remediation
  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

4
gnu zebraall versions
quagga<= 0.96.3
quaggaall versions
sgi propackall versions
⚠

Public Exploits & PoCs

1
dosGNU Zebra 0.9x / Quagga 0.96 - Remote Denial of Serviceverified
▣

Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD15 Dec 2003 · 05:00 AM
⚑

Vendor Advisories

2
rhsaRHSA-2003:307Low
rhsaRHSA-2003:305Low
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://marc.info/?l=bugtraq&m=106883387304266&w=2
http://secunia.com/advisories/10563Vendor Advisory
http://www.debian.org/security/2004/dsa-415PatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-305.htmlPatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2003-307.htmlPatchVendor Advisory
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