Arbitrary Code Execution

Affecting yamldotnet package, versions [,5.0.0)

Do your applications use this vulnerable package? Test your applications

Overview

yamldotnetprovides low level parsing and emitting of YAML as well as a high level object model similar to XmlDocument.

Affected versions of this package are vulnerable to Arbitrary Code Execution.

The Deserializer.Deserialize() function deserializes user-controlled types and blindly instantiates them. An attacker may send a specually crafted yaml file, which will then execute code in the context of the running process.

Remediation

Upgrade yamldotnet to version 5.0.0 or higher.

References

CVSS Score

7.8
high severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Credit
Kurt Boberg
CVE
CVE-2018-1000210
CWE
CWE-94
Snyk ID
SNYK-DOTNET-YAMLDOTNET-60255
Disclosed
19 Jul, 2018
Published
19 Jul, 2018