CVE-2017-20021 Solare Solar-Log File Upload privileges management

Medium 6.5 Published 9 Jun 2022 Updated 15 Apr 2025

Remote attackers can exploit a file upload vulnerability in Solar-Log to escalate privileges, requiring an upgrade to the latest version.

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

What is CVE-2017-20021?

CVE-2017-20021 is a medium-severity vulnerability in Solare Solar-Log, published on 9 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability, which was classified as critical, was found in Solare Solar-Log 2.8.4-56/3.5.2-85. This affects an unknown part of the component File Upload. The manipulation leads to privilege escalation. It is possible to initiate the attack remotely. Upgrading to version 3.5.3-86 is able to address this issue. It is recommended to upgrade the affected component.

Weakness: CWE-434, CWE-269

Which versions are affected by CVE-2017-20021?

It affects 8 products.

Products include Solar-Log Solar-Log 1000 Firmware, Solar-Log Solar-Log 1000 Pm\+ Firmware, Solar-Log Solar-Log 1200 Firmware, Solar-Log Solar-Log 2000 Firmware, Solar-Log Solar-Log 250 Firmware, Solar-Log Solar-Log 300 Firmware and 2 more.

How do I fix CVE-2017-20021?

No fix has been published for CVE-2017-20021 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-20021 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20021 exists.

Sources

Also known as GHSA-xwj9-9vmw-m922.