Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.

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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-2021-6703 Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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

Type Values Removed Values Added
Metrics epss

{'score': 0.00352}

epss

{'score': 0.00385}


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:2.9.14.14:*:*:*:*:*:*:*
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:firepower_management_center:2.9.17:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.14:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.17:*:*:*:*:*:*:*
Vendors & Products Cisco firepower Management Center
Cisco secure Firewall Management Center

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-12T20:48:23.581Z

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

Link: CVE-2021-1236

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-01-13T22:15:20.583

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

Link: CVE-2021-1236

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses