CVE-2001-0669
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 4.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 4.4% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 4.4% · EPSS, next 30 days
- Record status
- Modified
Affected
- Cisco Catalyst 6000 Intrusion Detection System Module
- Cisco Secure Intrusion Detection System
- Iss Realsecure Network Sensor 5.x
- Iss Realsecure Network Sensor 6.x
- Iss Realsecure Server Sensor 5.5
- Iss Realsecure Server Sensor 6.0
- Snort 1.8.1
- Enterasys Dragon 4.x
Attack profile CVSS 2.0 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
Raw vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2001-0669.md and follow it. Check whether this project is affected by CVE-2001-0669. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vuln-pub.shtml
- http://xforce.iss.net/alerts/advise95.php
- http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vuln-pub.shtml
- http://xforce.iss.net/alerts/advise95.php
References
- http://marc.info/?l=bugtraq&m=99972950200602&w=2
- http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vuln-pub.shtml
- http://www.kb.cert.org/vuls/id/548515
- http://www.securityfocus.com/bid/3292
- http://xforce.iss.net/alerts/advise95.php
- http://marc.info/?l=bugtraq&m=99972950200602&w=2
- http://www.cisco.com/warp/public/707/cisco-intrusion-detection-obfuscation-vuln-pub.shtml
- http://www.kb.cert.org/vuls/id/548515
- http://www.securityfocus.com/bid/3292
- http://xforce.iss.net/alerts/advise95.php