CVE-2019-7216 — An issue was discovered in FileChucker 4

An issue was discovered in FileChucker 4.99e-free-e02. filechucker.cgi has a filter bypass that allows a malicious user to upload any type of file by using % characters within the extension, e.g., file.%ph%p becomes file.php.

01What is this vulnerability?

An issue was discovered in FileChucker 4.99e-free-e02. filechucker.cgi has a filter bypass that allows a malicious user to upload any type of file by using % characters within the extension, e.g., file.%ph%p becomes file.php.

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: 2019-01-31T08:00:00.000Z
• Last modified: 2024-08-04T20:46:44.695Z

09References

• github.com — https://github.com/ekultek/cve-2019-7216
• encodable.com — https://encodable.com/filechucker/changelog/