Always-Incorrect Control Flow Implementation Affecting snort package, versions <2.9.20-0+deb10u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-DEBIAN10-SNORT-2767248
  • published19 Apr 2022
  • disclosed13 Jan 2021

Introduced: 13 Jan 2021

CVE-2021-1236  (opens in a new tab)
CWE-670  (opens in a new tab)

How to fix?

Upgrade Debian:10 snort to version 2.9.20-0+deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream snort package and not the snort package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1