CVE-2020-3561

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.

CVSS v3.0 4.7 MEDIUM
CVSS v2.0 4.3 MEDIUM

4.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:adaptive_security_appliance::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::
	cpe:2.3:a:cisco:firepower_threat_defense::::::::

Information

Published : 2020-10-21 12:15

Updated : 2020-10-30 11:15

NVD link : CVE-2020-3561

Mitre link : CVE-2020-3561

JSON object : View

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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Products Affected

cisco

firepower_threat_defense
adaptive_security_appliance

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