CVE-2021-1534

A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-url-bypass-sGcfsDrp	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:email_security_appliance_c170:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c190:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c380:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c390:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c680:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c690:-:::::::*
	cpe:2.3:h:cisco:email_security_appliance_c690x:-:::::::*

History

No history.

Information

Published : 2021-10-06 20:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-1534

Mitre link : CVE-2021-1534

CVE.ORG link : CVE-2021-1534

JSON object : View

Products Affected

cisco

email_security_appliance_c390
email_security_appliance_c690x
email_security_appliance_c170
email_security_appliance_c680
email_security_appliance_c380
asyncos
email_security_appliance_c690
email_security_appliance_c190

CWE

NVD-CWE-noinfo CWE-20

Improper Input Validation

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