CVE-2021-40102

Description

An issue was discovered in Concrete CMS through 8.5.5. Arbitrary File deletion can occur via PHAR deserialization in is_dir (PHP Object Injection associated with the __wakeup magic method).

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.68% Top 30%
Vendor Advisory concretecms.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/921288 third party advisory permissions required
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-40102?
CVE-2021-40102 has been scored as a critical severity vulnerability.
How to fix CVE-2021-40102?
To fix CVE-2021-40102, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40102 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40102 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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