Vulnerability Details : CVE-2018-1000210
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.
Products affected by CVE-2018-1000210
- cpe:2.3:a:yamldotnet_project:yamldotnet:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-1000210
0.34%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-1000210
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2018-1000210
-
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.Assigned by: nvd@nist.gov (Primary)
-
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-1000210
-
https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35
YamlDotNet/TypeNameInTagNodeTypeResolver.cs at f96b7cc40a0498f8bafdeb49df3aa23aa2c60993 · aaubry/YamlDotNet · GitHubThird Party Advisory
-
https://github.com/aaubry/YamlDotNet#version-500
GitHub - aaubry/YamlDotNet: YamlDotNet is a .NET library for YAMLThird Party Advisory
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