CVE-2021-45105 (Medium) detected in log4j-core-2.13.3.jar

[mend-bolt-for-github]

CVE-2021-45105 - Medium Severity Vulnerability

Vulnerable Library - log4j-core-2.13.3.jar

The Apache Log4j Implementation

Library home page: https://logging.apache.org/log4j/2.x/

Path to dependency file: /pom.xml

Path to vulnerable library: /home/wss-scanner/.m2/repository/org/apache/logging/log4j/log4j-core/2.13.3/log4j-core-2.13.3.jar

Dependency Hierarchy:

• log4j-slf4j18-impl-2.13.3.jar (Root Library)
  • ❌ log4j-core-2.13.3.jar (Vulnerable Library)

Vulnerability Details

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

Publish Date: 2021-12-18

URL: CVE-2021-45105

CVSS 3 Score Details (5.9)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • 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://logging.apache.org/log4j/2.x/security.html

Release Date: 2021-12-18

Fix Resolution (org.apache.logging.log4j:log4j-core): 2.17.0

Direct dependency fix Resolution (org.apache.logging.log4j:log4j-slf4j18-impl): 2.17.0

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