#VU98515 Exposed dangerous method or function in RPyC - CVE-2024-27758

Vulnerability identifier: #VU98515

Vulnerability risk: Medium

CVSSv4.0: 5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-27758

CWE-ID: CWE-749

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RPyC
Universal components / Libraries / Libraries used by multiple products

Vendor: tomerfiliba-org

Description

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to exposure of a method that calls the attribute named __array__ for a client-provided netref. A remote user can send specially crafted data to the application and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RPyC: 2.6.0 - 5.3.1

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External links
https://gist.github.com/renbou/957f70d27470982994f12a1d70153d09
https://github.com/tomerfiliba-org/rpyc/security/advisories/GHSA-h5cg-53g7-gqjw

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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.