CVE-2020-21054 — MEDIUM (6.1)

Vulnerability Description

Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized "f" variable in app\vars\vars_textarea.php.

CVSS Score

6.1

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Fusionpbx	Fusionpbx	4.5.7

Related Weaknesses (CWE)

CWE-79

References

https://github.com/fusionpbx/fusionpbx/commit/2489004c7b7e0b14e21cd86cedaab87fedPatchThird Party Advisory
https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-21/Third Party Advisory
https://github.com/fusionpbx/fusionpbx/commit/2489004c7b7e0b14e21cd86cedaab87fedPatchThird Party Advisory
https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-21/Third Party Advisory

FAQ

What is CVE-2020-21054?

CVE-2020-21054 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Cross Site Scripting (XSS) vulnerability in FusionPBX 4.5.7 allows remote malicious users to inject arbitrary web script or HTML via an unsanitized "f" variable in app\vars\vars_textarea.php.

How severe is CVE-2020-21054?

CVE-2020-21054 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-21054?

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