CVE-2017-18640 (High) detected in snakeyaml-1.23.jar

[mend-bolt-for-github]

CVE-2017-18640 - High Severity Vulnerability

Vulnerable Library - snakeyaml-1.23.jar

YAML 1.1 parser and emitter for Java

Library home page: http://www.snakeyaml.org

Path to dependency file: CyberWorld/build.gradle

Path to vulnerable library: /tmp/ws-ua_20200920214152_YOPGFG/downloadResource_HGXZPV/20200920214212/snakeyaml-1.23.jar

Dependency Hierarchy:

• spigot-api-1.14.4-R0.1-SNAPSHOT (Root Library)
  • ❌ snakeyaml-1.23.jar (Vulnerable Library)

Found in HEAD commit: b9535363a088a5809fb5876244f5880e14505c9b

Found in base branch: master

Vulnerability Details

The Alias feature in SnakeYAML 1.18 allows entity expansion during a load operation, a related issue to CVE-2003-1564.

Publish Date: 2019-12-12

URL: CVE-2017-18640

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://bitbucket.org/asomov/snakeyaml/commits/da11ddbd91c1f8392ea932b37fa48110fa54ed8c

Release Date: 2020-03-08

Fix Resolution: 1.26

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