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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-3561 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  4.7 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Nist CVSS score does not match with CNA score
CNA:  Cisco Systems, Inc.
Base Score:  4.7 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') cwe source acceptance level NIST  
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection') Cisco Systems, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
9.6.4.35
 cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
6.3.0.6
 cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
6.4.0		Up to (excluding)
6.4.0.10
 cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
6.5.0		Up to (excluding)
6.5.0.5
 cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
6.6.0		Up to (excluding)
6.6.1
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.8.0		Up to (excluding)
9.8.4.20
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.9.0		Up to (excluding)
9.9.2.80
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.10.0		Up to (excluding)
9.10.1.43
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.12.0		Up to (excluding)
9.12.3.9
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.13.0		Up to (excluding)
9.13.1.10
 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
9.14.0		Up to (excluding)
9.14.1.10

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-3561
NVD Published Date:
10/21/2020
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.