What is the severity of CVE-2021-40102?

CVE-2021-40102 has a high severity rating due to the potential for arbitrary file deletion.

How do I fix CVE-2021-40102?

To fix CVE-2021-40102, update Concrete CMS to the latest version beyond 8.5.5.

What kind of attack vector is associated with CVE-2021-40102?

CVE-2021-40102 is associated with PHP Object Injection via PHAR deserialization.

Can CVE-2021-40102 affect my website?

Yes, if you are using Concrete CMS version 8.5.5 or earlier, your website could be vulnerable to CVE-2021-40102.

What is the impact of CVE-2021-40102 on affected systems?

The impact of CVE-2021-40102 allows an attacker to delete arbitrary files, compromising system integrity.

Vulnerability/
CVE-2021-40102

critical

9.1

CWE

502

24/9/2021

4/8/2024

CVE-2021-40102

First published: Fri Sep 24 2021(Updated: )

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).

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Concrete5	<=8.5.5

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-40102?
CVE-2021-40102 has a high severity rating due to the potential for arbitrary file deletion.
How do I fix CVE-2021-40102?
To fix CVE-2021-40102, update Concrete CMS to the latest version beyond 8.5.5.
What kind of attack vector is associated with CVE-2021-40102?
CVE-2021-40102 is associated with PHP Object Injection via PHAR deserialization.
Can CVE-2021-40102 affect my website?
Yes, if you are using Concrete CMS version 8.5.5 or earlier, your website could be vulnerable to CVE-2021-40102.
What is the impact of CVE-2021-40102 on affected systems?
The impact of CVE-2021-40102 allows an attacker to delete arbitrary files, compromising system integrity.

agent/type
agent/references
collector/mitre-cve
source/MITRE
agent/severity
agent/author
agent/weakness
agent/last-modified-date
agent/first-publish-date
agent/description
agent/event
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/concretecms
canonical/concrete5
version/concrete5/8.5.5

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Frequently Asked Questions

What is the severity of CVE-2021-40102?
CVE-2021-40102 has a high severity rating due to the potential for arbitrary file deletion.
How do I fix CVE-2021-40102?
To fix CVE-2021-40102, update Concrete CMS to the latest version beyond 8.5.5.
What kind of attack vector is associated with CVE-2021-40102?
CVE-2021-40102 is associated with PHP Object Injection via PHAR deserialization.
Can CVE-2021-40102 affect my website?
Yes, if you are using Concrete CMS version 8.5.5 or earlier, your website could be vulnerable to CVE-2021-40102.
What is the impact of CVE-2021-40102 on affected systems?
The impact of CVE-2021-40102 allows an attacker to delete arbitrary files, compromising system integrity.