CVE-2020-3246 — MEDIUM (4.3)

Vulnerability Description

A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service. The vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user to access a crafted URL. A successful exploit could allow the attacker to inject arbitrary HTTP headers into valid HTTP responses sent to the browser of the user.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Cisco	Umbrella	All versions

Related Weaknesses (CWE)

CWE-74 CWE-93

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uVendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uVendor Advisory

FAQ

What is CVE-2020-3246?

CVE-2020-3246 is a vulnerability with a CVSS score of 4.3 (MEDIUM). A vulnerability in the web server of Cisco Umbrella could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user of an affected service...

How severe is CVE-2020-3246?

CVE-2020-3246 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-3246?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Umbrella.