Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability<p>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.</p>
<p>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.</p>
<p>Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.</p>
<p>This advisory is available at the following link:<br><a href="https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq" target="_blank" rel="noopener">https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq</a></p>
Security Impact Rating: Medium
CVE: CVE-2021-1236
Source: Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability (https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq?vs_f=Cisco%20Security%20Advisory&vs_cat=Security%20Intelligence&vs_type=RSS&vs_p=Multiple%20Cisco%20Products%20Snort%20Application%20Detection%20Engine%20Policy%20Bypass%20Vulnerability&vs_k=1)