RCE in Jc21 nginx Proxy Manager

CVE-2023-23596

jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.152 (96.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-23596?
CVE-2023-23596 is a high-severity vulnerability in Jc21 nginx Proxy Manager, classified under OS Command Injection. CVSS score: 8.8/10. Published 2023-01-20.
How severe is CVE-2023-23596?
High severity. CVSS v3 base score is 8.8 out of 10.