Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXJwY2gtY3FqOS1oNjVy

High severity vulnerability that affects YamlDotNet and YamlDotNet.Signed

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.

Permalink: https://github.com/advisories/GHSA-rpch-cqj9-h65r
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXJwY2gtY3FqOS1oNjVy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 5 years ago
Updated: over 1 year ago

CVSS Score: 7.8
CVSS vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Identifiers: GHSA-rpch-cqj9-h65r, CVE-2018-1000210
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-1000210
• https://github.com/aaubry/YamlDotNet#version-500
• https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35
• https://github.com/advisories/GHSA-rpch-cqj9-h65r

Repository: https://github.com/aaubry/YamlDotNet
Blast Radius: 1.0

Affected Packages