Executive Summary

Informations
Name CVE-2001-0669 First vendor Publication 2001-10-30
Vendor Cve Last vendor Modification 2016-10-18

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0669

CAPEC : Common Attack Pattern Enumeration & Classification

Id Name
CAPEC-71 Using Unicode Encoding to Bypass Validation Logic

CWE : Common Weakness Enumeration

% Id Name

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 2
Application 2
Application 1
Hardware 1

Open Source Vulnerability Database (OSVDB)

Id Description
4443 Cisco Catalyst 6000 IDS Non-Standard Encoding HTTP Attack Evasion

The Cisco Catalyst 6000 IDS contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4442 Network Flight Recorder (NFR) Non-Standard Encoding HTTP Attack Evasion

Network Flight Recorder contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4441 Dragon Sensor Non-Standard Encoding HTTP Attack Evasion

Dragon Sensor contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4440 ISS RealSecure Server Sensor Non-Standard Encoding HTTP Attack Evasion

ISS RealSecure Server Sensor contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4439 ISS RealSecure Network Sensor Non-Standard Encoding HTTP Attack Evasion

ISS RealSecure Network Sensor contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4438 Cisco Secure IDS Non-Standard Encoding HTTP Attack Evasion

Cisco Secure IDS contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.
4437 Snort Non-Standard Encoding HTTP Attack Evasion

Snort contains a flaw that may allow a malicious user to craft HTTP-based attacks that evade detection. The issue is triggered when %u encoding is used to obfuscate HTTP URLs used in attacks. It is possible that the flaw may allow HTTP-based attacks to not be detected by the IDS.

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/3292
BUGTRAQ http://marc.info/?l=bugtraq&m=99972950200602&w=2
CERT-VN http://www.kb.cert.org/vuls/id/548515
CISCO http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vu...
ISS http://xforce.iss.net/alerts/advise95.php

Alert History

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Date Informations
2021-05-04 12:01:25
  • Multiple Updates
2021-04-22 01:01:35
  • Multiple Updates
2020-05-23 00:14:40
  • Multiple Updates
2016-10-18 12:00:55
  • Multiple Updates
2013-05-11 12:04:51
  • Multiple Updates