CVE-2022-39297: Deserialization of Untrusted Data

October 12, 2022 (updated October 13, 2022)

MelisCms provides a full CMS for Melis Platform, including templating system, drag’n’drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of melisplatform/melis-cms, and ultimately leads to the execution of arbitrary PHP code on the system. Conducting this attack does not require authentication. Users should immediately upgrade to melisplatform/melis-cms >= 5.0.1. This issue was addressed by restricting allowed classes when deserializing user-controlled data.

References

github.com/advisories/GHSA-m3m3-6gww-7gj9
github.com/melisplatform/melis-cms/commit/d124b2474699a679a24ec52620cadceb3d4cec11
github.com/melisplatform/melis-cms/security/advisories/GHSA-m3m3-6gww-7gj9
nvd.nist.gov/vuln/detail/CVE-2022-39297

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