Vulnerability Description
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerability is due to incorrect detection of modified HTTP packets used in chunked responses. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured File Policy for HTTP packets and deliver a malicious payload.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Firepower Threat Defense | >= 6.0.0, < 6.3.0.1 |
| Cisco | Cloud Services Router 1000V | - |
| Cisco | Isrv | - |
| Cisco | 1100-4P | - |
| Cisco | 1100-8P | - |
| Cisco | 1101-4P | - |
| Cisco | 1109-2P | - |
| Cisco | 1109-4P | - |
| Cisco | 1111X-8P | - |
| Cisco | 4221 Integrated Services Router | - |
| Cisco | 4331 Integrated Services Router | - |
| Cisco | 4431 Integrated Services Router | - |
| Cisco | 4461 Integrated Services Router | - |
| Cisco | Isa 3000 | - |
| Cisco | Meraki Mx | - |
| Snort | Snort | < 2.9.13.1 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fVendor Advisory
- https://www.debian.org/security/2023/dsa-5354
- https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fVendor Advisory
- https://www.debian.org/security/2023/dsa-5354
FAQ
What is CVE-2020-3299?
CVE-2020-3299 is a vulnerability with a CVSS score of 5.8 (MEDIUM). Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured File Policy for HTTP. The vulnerabilit...
How severe is CVE-2020-3299?
CVE-2020-3299 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3299?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Firepower Threat Defense, Cisco Cloud Services Router 1000V, Cisco Isrv, Cisco 1100-4P, Cisco 1100-8P.