Vulnerability Note VU#968187

Cisco SN 5420 Storage Router vulnerable to DoS via HTTP request containing long headers

Original Release date: 14 Jan 2002 | Last revised: 14 Jan 2002


It is possible to cause a denial of service of the Cisco SN 5420 Storage Router by sending a HTTP request with a large header.


A vulnerability has been discovered in the Cisco SN 5420 Storage Router software versions 1.1(5) and earlier. By sending an HTTP request with a huge header , an intruder can cause a denial of service. Cisco has released an advisory to address this issue; it is available at


An attacker can cause a denial of service against the Cisco SN 5420 Storage Router.


This vulnerability is fixed in release 1.1(7) of the software. Please see Cisco's advisory for instructions on how to obtain the updated software for free. Cisco notes that version 1.1(6) of the software was never released.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
CiscoAffected-10 Jan 2002
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Our thanks to Cisco for the information provided in their advisory.

This document was written by Jason Rafail.

Other Information

  • CVE IDs: Unknown
  • Date Public: 09 Jan 2002
  • Date First Published: 14 Jan 2002
  • Date Last Updated: 14 Jan 2002
  • Severity Metric: 5.62
  • Document Revision: 12


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