CVE-2018-20524 — MEDIUM (6.1)

Vulnerability 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).

CVSS Score

6.1

MEDIUM

CVSS:3.0/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
Urlchatbox	Chat Anywhere	2.4.0

Related Weaknesses (CWE)

CWE-79

References

https://vul.su.ki/posts/Chat_Anywhere_2.4.0_XSS.md/ExploitThird Party Advisory
https://vul.su.ki/posts/Chat_Anywhere_2.4.0_XSS.md/ExploitThird Party Advisory

FAQ

What is CVE-2018-20524?

CVE-2018-20524 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 Pol...

How severe is CVE-2018-20524?

CVE-2018-20524 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-2018-20524?

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