THREATPORT/VULNERABILITY/CVE-2023-23596
HIGH SEVERITY

CVE-2023-23596

Nginx Proxy Manager vulnerability

CVSS
8.8
EPSS
15.2%
EPSS pct
96th
Exploited
No known
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.
Affected vendor
Jc21
Affected product
Nginx Proxy Manager
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-78 — OS Command Injection
Published
2023-01-20

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 15.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2023-23596

  • Confirm whether Jc21 Nginx Proxy Manager is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2023-23596.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-23596

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