CVE-2020-3561

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A vulnerability in the Clientless SSL VPN (WebVPN) of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to inject arbitrary HTTP headers in the responses of the affected system. The vulnerability is due to improper input sanitization. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to conduct a CRLF injection attack, adding arbitrary HTTP headers in the responses of the system and redirecting the user to arbitrary websites.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-crlf-inj-BX9uRwSn

Details

Source: MITRE

Published: 2020-10-21

Updated: 2020-10-30

Type: CWE-74

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 4.7

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Impact Score: 1.4

Exploitability Score: 2.8

Severity: MEDIUM

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
149526Cisco Adaptive Security Appliance Software WebVPN CRLF Injection (cisco-sa-asa-ftd-crlf-inj-BX9uRwSn)NessusCISCO
medium
149525Cisco Firepower Threat Defense Software WebVPN CRLF Injection (cisco-sa-asa-ftd-crlf-inj-BX9uRwSn)NessusCISCO
medium