CVE-2020-3315

Publication date 6 May 2020

Last updated 30 May 2025

Ubuntu priority

Cvss 3 Severity Score

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured file policies on an affected system. The vulnerability is due to errors in how the Snort detection engine handles specific HTTP responses. An attacker could exploit this vulnerability by sending crafted HTTP packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured file policies and deliver a malicious payload to the protected network.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
snort	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not affected
	23.10 mantic	Ignored end of life, was needed
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Vulnerable
	21.10 impish	Ignored end of life
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Vulnerable

Notes

yomonokio

There is no access to the actual fix for this CVE nor workarounds that address this vulnerability

Severity score breakdown

Parameter	Value
Base score	5.8 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N