CVE-2018-20524

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1

Description

The Chat Anywhere extension 2.4.0 for Chrome allows XSS via crafted use of <<a> in a message, because a danmuWrapper DIV element in chatbox-only\danmu.js is outside the scope of a Content Security Policy (CSP).

Overview

CVE ID
CVE-2018-20524

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2018-12-27T18:29:00

Last Modified Date
2019-01-17T16:46:45

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:urlchatbox:chat_anywhere:2.4.0:::::chrome::	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
3.0

Vector String
CVSS:3.0/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://vul.su.ki/posts/Chat_Anywhere_2.4.0_XSS.md/	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-20524
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20524

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 08:00:22				Added to TrackCVE
2022-12-03 15:47:42	2018-12-27T18:29Z	2018-12-27T18:29:00	CVE Published Date	updated
2022-12-03 15:47:42		2019-01-17T16:46:45	CVE Modified Date	updated
2022-12-03 15:47:42		Analyzed	Vulnerability Status	updated