SB2020092416 - Cross-site scripting in Joplin

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2020-15930)

The vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via a malicious HTML embed tag. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• http://packetstormsecurity.com/files/159316/Joplin-1.0.245-Cross-Site-Scripting-Code-Execution.html
• https://github.com/laurent22/joplin/issues/3552
• https://github.com/laurent22/joplin/releases/tag/v1.1.4