high7.5Public exploit code
CVE-2001-0669
Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection System, (2) Cisco Catalyst 6000 Intrusion Detection System Module, (3)…
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Cisco Secure IDS 2.0/3.0 / Snort 1.x / ISS RealSecure 5/6 / NFR 5.0 - Encoded IIS Detection Evasion2001-09-05 · remote · multiple · Verified
Impact
Various Intrusion Detection Systems (IDS) including (1) Cisco Secure Intrusion Detection System, (2) Cisco Catalyst 6000 Intrusion Detection System Module, (3) Dragon Sensor 4.x, (4) Snort before 1.8.1, (5) ISS RealSecure Network Sensor 5.x and 6.x before XPU 3.2, and (6) ISS RealSecure Server Sensor 5.5 and 6.0 for Windows, allow remote attackers to evade detection of HTTP attacks via non-standard "%u" Unicode encoding of ASCII characters in the requested URL.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Catalyst 6000 Intrusion Detection System Module | All versions |
| Cisco | Secure Intrusion Detection System | All versions |
| Iss | Realsecure Network Sensor | Versions 5.x, 6.x |
| Iss | Realsecure Server Sensor | Versions 5.5, 6.0 |
| Snort | Snort | Version 1.8.1 |
| Enterasys | Dragon | Version 4.x |