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 handling of an HTTP range header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
Published: 2021-01-13
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3317-1 snort security update
Debian DSA Debian DSA DSA-5354-1 snort security update
EUVD EUVD EUVD-2021-6690 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 handling of an HTTP range header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
History

Tue, 24 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 14 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00512}

epss

{'score': 0.00561}


Tue, 26 Nov 2024 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco secure Firewall Management Center
CPEs cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:*
Vendors & Products Cisco firepower Management Center
Cisco secure Firewall Management Center

Subscriptions

Cisco 1100-4p Integrated Services Router 1100-8p Integrated Services Router 1101-4p Integrated Services Router 1109-2p Integrated Services Router 1109-4p Integrated Services Router 1111x-8p Integrated Services Router 4221 Integrated Services Router 4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router 4431 Integrated Services Router 4451-x Integrated Services Router 4461 Integrated Services Router Csr 1000v Firepower Threat Defense Ios Xe Isa 3000 Secure Firewall Management Center
Snort Snort
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-12T20:48:44.825Z

Reserved: 2020-11-13T00:00:00.000Z

Link: CVE-2021-1223

cve-icon Vulnrichment

Updated: 2024-08-03T16:02:56.174Z

cve-icon NVD

Status : Modified

Published: 2021-01-13T22:15:20.317

Modified: 2024-11-26T16:09:02.407

Link: CVE-2021-1223

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses