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REST Plugin in Apache Struts uses an XStreamHandler with an instance of XStream for deserialization without any type filtering

High severity GitHub Reviewed Published Oct 16, 2018 to the GitHub Advisory Database • Updated Feb 7, 2025

Package

maven org.apache.struts:struts2-rest-plugin (Maven)

Affected versions

>= 2.5.0, < 2.5.13
>= 2.1.1, < 2.3.34

Patched versions

2.5.13
2.3.34

Description

The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

References

Published by the National Vulnerability Database Sep 15, 2017
Published to the GitHub Advisory Database Oct 16, 2018
Reviewed Jun 16, 2020
Last updated Feb 7, 2025

Severity

High

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
High
Integrity
High
Availability
High

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:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(100th percentile)

Weaknesses

CVE ID

CVE-2017-9805

GHSA ID

GHSA-gg9m-fj3v-r58c

Source code

Credits

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