High, CVSS 7.8NuGetPublished
High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed
CVE-2018-1000210 · GHSA-rpch-cqj9-h65r
- Affected
- NuGet yamldotnet.signed <= 4.3.2
- Fixed in
- 5.0.0· Vendor fix available
- Issue
- YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line "currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.
Recommended action: Upgrade to 5.0.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.