CVE-2023-4739 Byzoro Smart S85F Management Platform updateos.php unrestricted upload

Medium 6.3 Published 3 Sep 2023 Updated 21 Nov 2024

Attackers can upload malicious files via updateos.php to execute arbitrary code on the Byzoro Smart S85F Management Platform.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-4739?

CVE-2023-4739 is a medium-severity vulnerability in Byzoro Smart S85F Management Platform, published on 3 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability, which was classified as critical, has been found in Byzoro Smart S85F Management Platform up to 20230820. Affected by this issue is some unknown functionality of the file /sysmanage/updateos.php. The manipulation of the argument 1_file_upload leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-238628. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-434

Which versions are affected by CVE-2023-4739?

It affects 1 product.

Products include Byzoro Smart S85f Firmware.

How do I fix CVE-2023-4739?

No fix has been published for CVE-2023-4739 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-4739 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4739 exists.

Sources

Also known as GHSA-3pj2-53jv-g287.