Vulnerability identifier: #VU22861

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-9763

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MAIL2000
Mobile applications / Apps for mobile phones

Vendor: Openfind

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data passed via an "<object data="data:text/html" substring in an e-mail message. 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.

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

MAIL2000: 6.0 - 7.0

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External links
http://gist.github.com/keniver/1f6092242ee79a8456a86bb7624bc171
http://www.openfind.com.tw/taiwan/download/m2k/patch/Openfind_OF-ISAC-19-004.pdf
http://www.openfind.com.tw/taiwan/download/m2k/patch/Openfind_OF-ISAC-19-005.pdf

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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. However, proof of concept for this vulnerability is available.