CVE-2023-20215 — MEDIUM (5.8)

Vulnerability Description

A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked. This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.

CVSS Score

5.8

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Cisco	Asyncos	11.7.0-406
Cisco	S195	-
Cisco	S395	-
Cisco	S695	-
Cisco	Web Security Appliance S170	-
Cisco	Web Security Appliance S190	-
Cisco	Web Security Appliance S380	-
Cisco	Web Security Appliance S390	-
Cisco	Web Security Appliance S680	-
Cisco	Web Security Appliance S690	-
Cisco	Web Security Appliance S690X	-

Related Weaknesses (CWE)

CWE-202

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciVendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciVendor Advisory

FAQ

What is CVE-2023-20215?

CVE-2023-20215 is a vulnerability with a CVSS score of 5.8 (MEDIUM). A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a ne...

How severe is CVE-2023-20215?

CVE-2023-20215 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-20215?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Asyncos, Cisco S195, Cisco S395, Cisco S695, Cisco Web Security Appliance S170.