CVE-2020-11682 — Castel NextGen DVR v1

Castel NextGen DVR v1.0.0 is vulnerable to CSRF in all state-changing request. A __RequestVerificationToken is set by the web interface, and included in requests sent by web interface. However, this token is not verified by the application: the token can be removed from all reque

01What is this vulnerability?

Castel NextGen DVR v1.0.0 is vulnerable to CSRF in all state-changing request. A __RequestVerificationToken is set by the web interface, and included in requests sent by web interface. However, this token is not verified by the application: the token can be removed from all requests and the request will succeed.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-06-04T19:10:00.000Z
• Last modified: 2024-08-04T11:35:13.725Z

09References

• www.securitymetrics.com — https://www.securitymetrics.com/blog/where-did-request-come-from-cross-site-requ…
• seclists.org — http://seclists.org/fulldisclosure/2020/Jun/8
• packetstormsecurity.com — http://packetstormsecurity.com/files/157954/Castel-NextGen-DVR-1.0.0-Bypass-CSRF…