CVE-2024-23827 Nginx-UI arbitrary file write through the Import Certificate feature

Critical 9.8 Published Updated

Attackers can write arbitrary files via the Import Certificate feature, potentially achieving remote code execution by overwriting configuration files.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-23827?

CVE-2024-23827 is a critical path traversal vulnerability in 0xJacky nginx-ui, published on 29 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Nginx-UI is a web interface to manage Nginx configurations. The Import Certificate feature allows arbitrary write into the system. The feature does not check if the provided user input is a certification/key and allows to write into arbitrary paths in the system. It's possible to leverage the vulnerability into a remote code execution overwriting the config file app.ini. Version 2.0.0.beta.12 fixed the issue.

Weakness: CWE-22

Which versions are affected by CVE-2024-23827?

3 open source packages ship an affected version, including github.com/0xJacky/Nginx-UI. It affects 1 product.

PackageAffectedFixed in
github.com/0xJacky/Nginx-UI GoAll versionsNone
github.com/0xJacky/Nginx-UI GoAll versions1.9.10-0.20240128060047-8581bdd3c6f4
github.com/0xJacky/Nginx-UI GoAll versions1.9.10-0.20240128060047-8581bdd3c6f4

Products include Nginxui Nginx Ui.

How do I fix CVE-2024-23827?

Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20240128060047-8581bdd3c6f4 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2024-23827 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23827 exists.

Sources

Also known as GHSA-xvq9-4vpv-227m, GO-2024-2481.

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