Finding Control Web Panel (CWP) instances

(updated ), by Pearce Barry
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Security researcher Paulos Yibelo shared findings this week on two new vulnerabilities within the popular Control Web Panel (formerly CentOS Web Panel) web hosting management software. Both CVE-2021-45466 (a file write vulnerability) and CVE-2021-45467 (a file inclusion vulnerability) are interesting individually, but they provide a powerful attack vector when chained together to achieve pre-authentication remote code execution (RCE) on a vulnerable target. Taking into account the 200k+ unique, public-facing servers currently running CWP, there could be many systems at risk of exploitation.

The maintainers of CWP have patched CVE-2021-45467 in the most recent release (v0.9.8.1122), with the guidance for administrators of CWP installations to upgrade to this version as soon as possible. No interim mitigation strategies have been shared.

How to find Control Web Panel (CWP) instances with runZero

From the Asset Inventory, use the following pre-built query to locate potentially vulnerable Control Web Panel instances within your network:

service.product:"CentOS Web Panel"
Find CWP instances

Please note that though the older product name is used in the query, the underlying match logic is using the web server value found in HTTP header responses from the CWP server, which has remained the same across the product name change.

As always, any prebuilt queries we create are available from our Queries Library. Check out the library for other useful inventory [queries]/docs/search-query-list/).

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