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Apache Struts vulnerable to memory exhaustion

Moderate severity GitHub Reviewed Published Jun 14, 2023 to the GitHub Advisory Database • Updated Nov 10, 2023

Package

maven org.apache.struts:struts2-core (Maven)

Affected versions

< 2.5.31
>= 6.0.0, < 6.1.2.1

Patched versions

2.5.31
6.1.2.1

Description

Denial of service via out of memory (OOM) owing to not properly checking of list bounds. When a Multipart request has non-file normal form fields, Struts used to bring them into memory as Strings without checking their sizes. This could lead to OOM if developer has set struts.multipart.maxSize to a value equal or greater than the available memory.

Upgrade to Struts 2.5.31 or 6.1.2.1 or greater.

References

Published by the National Vulnerability Database Jun 14, 2023
Published to the GitHub Advisory Database Jun 14, 2023
Reviewed Jun 14, 2023
Last updated Nov 10, 2023

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
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

1.484%
(87th percentile)

Weaknesses

CVE ID

CVE-2023-34149

GHSA ID

GHSA-8f6x-v685-g2xc

Source code

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