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Deserialization of Untrusted Data

CVE-2022-39297

High
9.8/10

Summary

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. This issue was addressed by restricting allowed classes when deserializing user-controlled data. This vulnerability affects versions prior to 5.0.1.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-502 - Deserialization of Untrusted Data

Deserialization of untrusted data vulnerabilities enable an attacker to replace or manipulate a serialized object, replacing it with malicious data. When the object is deserialized at the victim's end the malicious data is able to compromise the victim’s system. The exploit can be devastating, its impact may range from privilege escalation, broken access control, or denial of service attacks to allowing unauthorized access to the application's internal code and logic which can compromise the entire system.

References

Advisory Timeline

  • Published