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CVE-2021-1236

CVE information

Published

1 year ago

Last Modified

1 year ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

Description

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..

CVSSv2.0 Score

Severity
Medium
Base Score
5/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Medium
Base Score
5.3/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
1.4/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
Low
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
  Yes
- 17.4.1
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:*
  No
-