CVE-2001-0669

Cisco Secure IDS 2.0/3.0 / Snort 1.x / ISS RealSecure 5/6 / NFR 5.0 - Encoded IIS Detection Evasion

Severity Score

7.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

*Credits: N/A

CVSS Scores

NISTv2 7.5

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2001-08-27 CVE Reserved
2001-09-05 First Exploit
2001-10-12 CVE Published
2023-03-07 EPSS Updated
2024-08-08 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (6)

URL	Tag	Source
http://marc.info/?l=bugtraq&m=99972950200602&w=2	Mailing List
http://www.kb.cert.org/vuls/id/548515	Third Party Advisory
http://www.securityfocus.com/bid/3292	Vdb Entry

URL	Date	SRC
https://www.exploit-db.com/exploits/21100	2001-09-05

URL	Date	SRC
http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vuln-pub.shtml	2016-10-18
http://xforce.iss.net/alerts/advise95.php	2016-10-18

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Catalyst 6000 Intrusion Detection System Module Search vendor "Cisco" for product "Catalyst 6000 Intrusion Detection System Module"				*		-		Affected
Cisco Search vendor "Cisco"		Secure Intrusion Detection System Search vendor "Cisco" for product "Secure Intrusion Detection System"				*		-		Affected
Iss Search vendor "Iss"		Realsecure Network Sensor Search vendor "Iss" for product "Realsecure Network Sensor"				5.x Search vendor "Iss" for product "Realsecure Network Sensor" and version "5.x"		-		Affected
Iss Search vendor "Iss"		Realsecure Network Sensor Search vendor "Iss" for product "Realsecure Network Sensor"				6.x Search vendor "Iss" for product "Realsecure Network Sensor" and version "6.x"		-		Affected
Iss Search vendor "Iss"		Realsecure Server Sensor Search vendor "Iss" for product "Realsecure Server Sensor"				5.5 Search vendor "Iss" for product "Realsecure Server Sensor" and version "5.5"		-		Affected
Iss Search vendor "Iss"		Realsecure Server Sensor Search vendor "Iss" for product "Realsecure Server Sensor"				6.0 Search vendor "Iss" for product "Realsecure Server Sensor" and version "6.0"		-		Affected
Snort Search vendor "Snort"		Snort Search vendor "Snort" for product "Snort"				1.8.1 Search vendor "Snort" for product "Snort" and version "1.8.1"		-		Affected
Enterasys Search vendor "Enterasys"		Dragon Search vendor "Enterasys" for product "Dragon"				4.x Search vendor "Enterasys" for product "Dragon" and version "4.x"		-		Affected