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GeoIP processor disables SSL certificate validation when downloading databases

Moderate severity GitHub Reviewed Published Oct 15, 2025 in opensearch-project/data-prepper

Package

maven org.opensearch.dataprepper.plugins:geoip-processor (Maven)

Affected versions

>= 2.7.0, < 2.12.2

Patched versions

2.12.2

Description

Impact

The GeoIP processor in Data Prepper was configured to trust all SSL certificates and disable hostname verification when downloading GeoIP databases from HTTP URLs, making downloads vulnerable to man-in-the-middle attacks.

The GeoIP processor included a custom SSL implementation that completely bypassed certificate validation when downloading GeoIP databases from external sources. The initiateSSL() method incorrectly implemented an approach for trusting all certificates. Specifically it:

  • Accepted all SSL certificates without validation
  • Disabled server certificate verification
  • Disabled client certificate verification
  • Disabled hostname verification

This configuration made database downloads vulnerable to man-in-the-middle attacks, potentially allowing attackers to serve malicious GeoIP databases that could compromise the integrity of geolocation data processing.

Patches

Data Prepper 2.12.2 contains a fix for this issue.

Workarounds

If upgrading is not immediately possible:

  • Use local GeoIP database files instead of downloading from HTTP URLs
  • Ensure database downloads occur only over trusted networks

References

@cwperks cwperks published to opensearch-project/data-prepper Oct 15, 2025
Published to the GitHub Advisory Database Oct 15, 2025
Reviewed Oct 15, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

Weaknesses

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate. Learn more on MITRE.

CVE ID

No known CVE

GHSA ID

GHSA-3xgr-h5hq-7299

Source code

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