CVE-2021-1236
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.
Risk Information
Base Score
5.3
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score
Exploitation Probability
0.2
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| snort security update(DSA-5354-1) snort_2.9.20-0+deb11u1_amd64.deb | Linux |
| snort security update(DSA-5354-1) snort_2.9.20-0+deb11u1_i386.deb | Linux |
| Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability For Cisco Firepower Threat Defense Software | NCM |
| Always-Incorrect Control Flow Implementation Vulnerability (CVE-2021-1236) | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1706067 | Security Update for Cisco Firepower Threat Defense Software Gibraltar-16.12.5 |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234