#VU64084 Cross-site scripting in LibreHealth EHR - CVE-2022-31495

Vulnerability identifier: #VU64084

Vulnerability risk: Low

CVSSv4.0: 0.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-31495

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreHealth EHR
Client/Desktop applications / Other client software

Vendor: LibreHealth

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 in the "return_page" parameter in the gacl/admin/acl_admin.php script. A remote user 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

LibreHealth EHR: 2.0.0

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External links
https://gitlab.com/librehealth/ehr/lh-ehr/-/tags
https://github.com/LibreHealthIO/lh-ehr/tags
https://nitroteam.kz/index.php?action=researches&slug=librehealth2_r

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Q & A

Can this vulnerability be exploited remotely?

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