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CVE-2020-8840

CRITICAL

Deserialization of Untrusted Data in jackson-databind

Published March 4, 2020Updated March 16, 2024Source: osv

Summary

FasterXML jackson-databind 2.x before 2.6.7.4, 2.7.x before 2.7.9.7, 2.8.x before 2.8.11.5 and 2.9.x before 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update com.fasterxml.jackson.core:jackson-databind to 2.8.11.5 or later
<!-- Update pom.xml dependency version to 2.8.11.5 for com.fasterxml.jackson.core:jackson-databind -->
Maven
Update com.fasterxml.jackson.core:jackson-databind to 2.9.10.3 or later
<!-- Update pom.xml dependency version to 2.9.10.3 for com.fasterxml.jackson.core:jackson-databind -->
Maven
Update com.fasterxml.jackson.core:jackson-databind to 2.6.7.4 or later
<!-- Update pom.xml dependency version to 2.6.7.4 for com.fasterxml.jackson.core:jackson-databind -->
Maven
Update com.fasterxml.jackson.core:jackson-databind to 2.7.9.7 or later
<!-- Update pom.xml dependency version to 2.7.9.7 for com.fasterxml.jackson.core:jackson-databind -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

PackageEcosystemAffectedFixed In
com.fasterxml.jackson.core:jackson-databind
maven
2.8.0, 2.8.1, 2.8.10, 2.8.11 (+13 more)2.8.11.5
com.fasterxml.jackson.core:jackson-databind
maven
2.9.0, 2.9.0.pr1, 2.9.0.pr2, 2.9.0.pr3 (+16 more)2.9.10.3
com.fasterxml.jackson.core:jackson-databind
maven
2.0.0, 2.0.1, 2.0.2, 2.0.4 (+58 more)2.6.7.4
com.fasterxml.jackson.core:jackson-databind
maven
2.7.0, 2.7.1, 2.7.1-1, 2.7.2 (+13 more)2.7.9.7

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-502
    Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2020-8840?
Deserialization of Untrusted Data in jackson-databind This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2020-8840?
CVE-2020-8840 affects com.fasterxml.jackson.core:jackson-databind. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-8840 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-4w82-r329-3q67

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