CVE-2020-35700 SQL Injection in librenms

What is CVE-2020-35700?

CVE-2020-35700 is a high-severity SQL injection vulnerability in Librenms Librenms, published on 8 Feb 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A second-order SQL injection issue in Widgets/TopDevicesController.php (aka the Top Devices dashboard widget) of LibreNMS before 21.1.0 allows remote authenticated attackers to execute arbitrary SQL commands via the sort_order parameter against the /ajax/form/widget-settings endpoint.

Weakness: CWE-89

Which versions are affected by CVE-2020-35700?

2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.

Products include Librenms Librenms.

How do I fix CVE-2020-35700?

Upgrade librenms/librenms to 21.1.0 or later.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2020-35700 being exploited?

There is no known exploitation of CVE-2020-35700 in the wild and no public exploit code.

Other vulnerabilities in Librenms Librenms

• CVE-2023-4982 Cross-site Scripting (XSS) - Stored in librenms/librenms Critical 9.8
• CVE-2022-29712 Command injection in librenms Critical 9.8
• CVE-2021-44278 Path traversal in librenms/librenms Critical 9.8
• CVE-2019-10665 LibreNMS Information Disclosure Critical 9.8
• CVE-2018-20434 LibreNMS arbitrary OS commands execution Critical 9.8

All Librenms Librenms vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h59f-p56g-g75v.