CVE-2020-21054

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1

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.

Overview

CVE ID
CVE-2020-21054

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-05-20T16:15:07

Last Modified Date
2021-05-25T20:02:44

Weakness Enumerations

CWE	URL
CWE-79	http://cwe.mitre.org/data/definitions/79.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:fusionpbx:fusionpbx:4.5.7:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
CHANGED

Confidentiality Impact
LOW

Availability Impact
NONE

Base Score
6.1

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
2.7

References

Reference URL	Reference Tags
https://github.com/fusionpbx/fusionpbx/commit/2489004c7b7e0b14e21cd86cedaab87fed209415	Patch Third Party Advisory
https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-xss-21/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-21054
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21054

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:14:52				Added to TrackCVE
2022-12-05 02:42:01	2021-05-20T16:15Z	2021-05-20T16:15:07	CVE Published Date	updated
2022-12-05 02:42:01		2021-05-25T20:02:44	CVE Modified Date	updated
2022-12-05 02:42:01		Analyzed	Vulnerability Status	updated