Cross-site scripting in discord-markdown parser for Discord messages



Published: 2020-03-02
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
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discord-markdown
Universal components / Libraries / Libraries used by multiple products

Vendor brussell98

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU25727

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

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

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website, leading to remote code execution.

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 updates from vendor's website.

Vulnerable software versions

discord-markdown: 1.0.0 - 2.3.0

External links

http://snyk.io/vuln/SNYK-JS-DISCORDMARKDOWN-552161
http://github.com/brussell98/discord-markdown/commit/7ce2eb66520815dcf5e97ef2bc8a2d5979da66e7
http://github.com/brussell98/discord-markdown/issues/13


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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