CVE-2020-3315 : Multiple Cisco products are affected by a vulnerability in the Snort detection e

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.

Published 2020-05-06 17:15:14

Updated 2024-11-26 16:09:02

Source Cisco Systems, Inc.

View at NVD, CVE.org

Products affected by CVE-2020-3315

Cisco » IOS » Version: 16.11.2
cpe:2.3:o:cisco:ios:16.11.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-lte Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Csr1000v » Version: N/A
When used together with: Cisco » Isa-3000-2c2f-k9 » Version: N/A
When used together with: Cisco » Isa-3000-4c-k9 » Version: N/A
Cisco » IOS » Version: 17.3.1
cpe:2.3:o:cisco:ios:17.3.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-lte Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Csr1000v » Version: N/A
When used together with: Cisco » Isa-3000-2c2f-k9 » Version: N/A
When used together with: Cisco » Isa-3000-4c-k9 » Version: N/A
Cisco » IOS » Version: 15.2(7)e
cpe:2.3:a:cisco:ios:15.2\(7\)e:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-lte Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Csr1000v » Version: N/A
When used together with: Cisco » Isa-3000-2c2f-k9 » Version: N/A
When used together with: Cisco » Isa-3000-4c-k9 » Version: N/A
Cisco » Firepower Threat Defense
Versions before (<) 6.6.0
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
Matching versions
Cisco » Secure Firewall Management Center » Version: 2.9.14.4
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.4:*:*:*:*:*:*:*
Matching versions
Cisco » Secure Firewall Management Center » Version: 2.9.15
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:*
Matching versions
Cisco » Secure Firewall Management Center » Version: 2.9.16
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2020-3315

EPSS FAQ

0.12%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 45 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3315

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.8	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N	3.9	1.4	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: Low Availability: None
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: Low Availability: None

CWE ids for CVE-2020-3315

CWE-668 Exposure of Resource to Wrong Sphere

The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

Assigned by: nvd@nist.gov (Primary)
CWE-693 Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Assigned by: ykramarz@cisco.com (Secondary)

References for CVE-2020-3315

https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html

[SECURITY] [DLA 3317-1] snort security update

CVEs referencing this url
https://www.debian.org/security/2023/dsa-5354

Debian -- Security Information -- DSA-5354-1 snort

CVEs referencing this url
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort_filepolbypass-m4X5DgOP

Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability
Vendor Advisory

Jump to

Vulnerability Details : CVE-2020-3315

Products affected by CVE-2020-3315

Exploit prediction scoring system (EPSS) score for CVE-2020-3315

CVSS scores for CVE-2020-3315

CWE ids for CVE-2020-3315

References for CVE-2020-3315