CVE-2022-21647

Deserialization of Untrusted Data in Codeigniter4

Description

CodeIgniter is an open source PHP full-stack web framework. Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. Users are advised to upgrade to v4.1.6 or later. Users unable to upgrade as advised to not use the `old()` function and form_helper nor `RedirectResponse::withInput()` and `redirect()->withInput()`.

Category

7.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 10.87% Top 10%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: codeigniter4 CodeIgniter4
Published at:
Updated at:

References

Link Tags
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-w6jr-wj64-mc9x third party advisory mitigation
https://github.com/codeigniter4/CodeIgniter4/commit/ce95ed5765256e2f09f3513e7d42790e0d6948f5 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-21647?
CVE-2022-21647 has been scored as a high severity vulnerability.
How to fix CVE-2022-21647?
To fix CVE-2022-21647, 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-2022-21647 being actively exploited in the wild?
It is possible that CVE-2022-21647 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-21647?
CVE-2022-21647 affects codeigniter4 CodeIgniter4.
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