Cross-site scripting in Joplin



| Updated: 2021-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-28249
CWE-ID CWE-79
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Joplin
Client/Desktop applications / Software for archiving

Vendor Joplinapp

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU53056

Risk: Low

CVSSv4.0: 0.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear]

CVE-ID: CVE-2020-28249

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: Yes

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks via a LINK element in a note.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via a LINK element in a note. 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Joplin: 1.0.62 - 1.2.5

CPE2.3 External links

https://github.com/fhlip0/JopinXSS


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted archive.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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