CVE-2020-3315

Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Múltiples productos de Cisco están afectados por una vulnerabilidad en el motor de detección Snort que podría permitir a un atacante remoto no autenticado omitir las políticas de archivos configuradas sobre un sistema afectado. La vulnerabilidad es debido a errores en como el motor de detección Snort maneja respuestas HTTP específicas. Un atacante podría explotar esta vulnerabilidad mediante el envío de paquetes HTTP diseñados que fluirían por medio de un sistema afectado. Una explotación con éxito podría permitir a un atacante omitir las políticas de archivos configuradas y entregar una carga maliciosa a la red protegida.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-05-06 CVE Published
2024-02-24 EPSS Updated
2024-11-15 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-668: Exposure of Resource to Wrong Sphere
CWE-693: Protection Mechanism Failure

CAPEC

References (3)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort_filepolbypass-m4X5DgOP	2023-05-23
https://www.debian.org/security/2023/dsa-5354	2023-05-23

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1100-4g Integrated Services Router Search vendor "Cisco" for product "1100-4g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1100-6g Integrated Services Router Search vendor "Cisco" for product "1100-6g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1100-lte Integrated Services Router Search vendor "Cisco" for product "1100-lte Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1101 Integrated Services Router Search vendor "Cisco" for product "1101 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1109 Integrated Services Router Search vendor "Cisco" for product "1109 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1111x Integrated Services Router Search vendor "Cisco" for product "1111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	111x Integrated Services Router Search vendor "Cisco" for product "111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1120 Integrated Services Router Search vendor "Cisco" for product "1120 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	1160 Integrated Services Router Search vendor "Cisco" for product "1160 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	4461 Integrated Services Router Search vendor "Cisco" for product "4461 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	Csr1000v Search vendor "Cisco" for product "Csr1000v"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-2c2f-k9 Search vendor "Cisco" for product "Isa-3000-2c2f-k9"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	15.2\(7\)e Search vendor "Cisco" for product "Ios" and version "15.2\(7\)e"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-4c-k9 Search vendor "Cisco" for product "Isa-3000-4c-k9"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1100-4g Integrated Services Router Search vendor "Cisco" for product "1100-4g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1100-6g Integrated Services Router Search vendor "Cisco" for product "1100-6g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1100-lte Integrated Services Router Search vendor "Cisco" for product "1100-lte Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1101 Integrated Services Router Search vendor "Cisco" for product "1101 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1109 Integrated Services Router Search vendor "Cisco" for product "1109 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1111x Integrated Services Router Search vendor "Cisco" for product "1111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	111x Integrated Services Router Search vendor "Cisco" for product "111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1120 Integrated Services Router Search vendor "Cisco" for product "1120 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	1160 Integrated Services Router Search vendor "Cisco" for product "1160 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	4461 Integrated Services Router Search vendor "Cisco" for product "4461 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	Csr1000v Search vendor "Cisco" for product "Csr1000v"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-2c2f-k9 Search vendor "Cisco" for product "Isa-3000-2c2f-k9"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	16.11.2 Search vendor "Cisco" for product "Ios" and version "16.11.2"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-4c-k9 Search vendor "Cisco" for product "Isa-3000-4c-k9"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1100-4g Integrated Services Router Search vendor "Cisco" for product "1100-4g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1100-6g Integrated Services Router Search vendor "Cisco" for product "1100-6g Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1100-lte Integrated Services Router Search vendor "Cisco" for product "1100-lte Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1101 Integrated Services Router Search vendor "Cisco" for product "1101 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1109 Integrated Services Router Search vendor "Cisco" for product "1109 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1111x Integrated Services Router Search vendor "Cisco" for product "1111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	111x Integrated Services Router Search vendor "Cisco" for product "111x Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1120 Integrated Services Router Search vendor "Cisco" for product "1120 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	1160 Integrated Services Router Search vendor "Cisco" for product "1160 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	4221 Integrated Services Router Search vendor "Cisco" for product "4221 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	4331 Integrated Services Router Search vendor "Cisco" for product "4331 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	4431 Integrated Services Router Search vendor "Cisco" for product "4431 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	4461 Integrated Services Router Search vendor "Cisco" for product "4461 Integrated Services Router"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Csr1000v Search vendor "Cisco" for product "Csr1000v"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-2c2f-k9 Search vendor "Cisco" for product "Isa-3000-2c2f-k9"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Search vendor "Cisco" for product "Ios"	17.3.1 Search vendor "Cisco" for product "Ios" and version "17.3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Isa-3000-4c-k9 Search vendor "Cisco" for product "Isa-3000-4c-k9"	-	-	Safe
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				2.9.14.4 Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.14.4"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				2.9.15 Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.15"		-		Affected
Cisco Search vendor "Cisco"		Firepower Management Center Search vendor "Cisco" for product "Firepower Management Center"				2.9.16 Search vendor "Cisco" for product "Firepower Management Center" and version "2.9.16"		-		Affected
Cisco Search vendor "Cisco"		Firepower Threat Defense Search vendor "Cisco" for product "Firepower Threat Defense"				< 6.6.0 Search vendor "Cisco" for product "Firepower Threat Defense" and version " < 6.6.0"		-		Affected