Skip to main content

Deserialization of Untrusted Data

CVE-2021-4178

Medium
6.7/10

Summary

A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client due to an improperly configured YAML parsing. This will allow a local and privileged attacker to supply malicious YAML. This vulnerability affects versions versions 5.0.0-beta-1 prior to 5.0.3, 5.1.x prior to 5.1.2, 5.2.x prior to 5.3.2, 5.4.x prior to 5.4.2, 5.5.x prior to 5.7.4, 5.8.x prior to 5.8.1, 5.9.x prior to 5.10.2 and 5.11.x prior to 5.11.2.

  • LOW
  • LOCAL
  • HIGH
  • UNCHANGED
  • NONE
  • HIGH
  • 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