Description
Multiple Cisco products are affected by a vulnerability in Snort rules that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.The vulnerability is due to improper handling of the Block with Reset or Interactive Block with Reset actions if a rule is configured without proper constraints. An attacker could exploit this vulnerability by sending a crafted IP packet to the affected device. A successful exploit could allow the attacker to cause through traffic to be dropped. Note: Only products with Snort3 configured and either a rule with Block with Reset or Interactive Block with Reset actions configured are vulnerable. Products configured with Snort2 are not vulnerable.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-27303 | Multiple Cisco products are affected by a vulnerability in Snort rules that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.The vulnerability is due to improper handling of the Block with Reset or Interactive Block with Reset actions if a rule is configured without proper constraints. An attacker could exploit this vulnerability by sending a crafted IP packet to the affected device. A successful exploit could allow the attacker to cause through traffic to be dropped. Note: Only products with Snort3 configured and either a rule with Block with Reset or Interactive Block with Reset actions configured are vulnerable. Products configured with Snort2 are not vulnerable. |
References
History
Mon, 07 Jul 2025 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cisco snort
|
|
| CPEs | cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Snort
Snort snort |
Cisco snort
|
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:secure_firewall_management_center:3.1.0.1:*:*:*:*:*:*:* | |
| Vendors & Products |
Cisco firepower Management Center
|
Cisco secure Firewall Management Center
|
Thu, 07 Nov 2024 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-11-07T21:45:31.681Z
Reserved: 2021-08-25T00:00:00.000Z
Link: CVE-2021-40116
Updated: 2024-08-04T02:27:31.552Z
Status : Modified
Published: 2021-10-27T19:15:08.717
Modified: 2025-07-07T12:40:02.540
Link: CVE-2021-40116
No data.
OpenCVE Enrichment
No data.
Weaknesses
EUVD