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CVE-2021-1236

Published: 13 January 2021

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.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
snort
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

impish Not vulnerable
(2.9.15.1-5)
jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

mantic Not vulnerable

trusty Needs triage

upstream
Released (2.9.15.1-1)
xenial Needs triage

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N