CVE-2021-20729

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1

Description

Cross-site scripting vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier) allows a remote attacker to inject an arbitrary script via a malicious URL.

Overview

CVE ID
CVE-2021-20729

Assigner
vultures@jpcert.or.jp

Vulnerability Status
Analyzed

Published Version
2022-03-31T08:15:08

Last Modified Date
2022-04-08T02:26:46

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:netgate:pfsense_plus::::::::	1	OR		21.05
cpe:2.3:a:pfsense:pfsense:::::community:::*	1	OR		2.5.2

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://jvn.jp/en/jp/JVN87751554/index.html
https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.asc

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-20729
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20729

History

Created	Old Value	New Value	Data Type	Notes
2022-04-04 00:39:50				Added to TrackCVE
2022-12-06 13:49:51	2022-03-31T08:15Z	2022-03-31T08:15:08	CVE Published Date	updated
2022-12-06 13:49:51		2022-04-08T02:26:46	CVE Modified Date	updated
2022-12-06 13:49:51		Analyzed	Vulnerability Status	updated