Apache Struts In-Memory File Leakage on Rejected Multipart Requests (2.5.31,6.1.2.1,6.3.0.0)
CVE-2023-41835 Published on December 5, 2023

Apache Struts: excessive disk usage
When a Multipart request is performed but some of the fields exceed the maxStringLength  limit, the upload files will remain in struts.multipart.saveDir  even if the request has been denied. Users are recommended to upgrade to versions Struts 2.5.32 or 6.1.2.2 or Struts 6.3.0.1 or greater, which fixe this issue.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2023-41835 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is an Insufficient Cleanup Vulnerability?

The software does not properly "clean up" and remove temporary or supporting resources after they have been used.

CVE-2023-41835 has been classified to as an Insufficient Cleanup vulnerability or weakness.


Products Associated with CVE-2023-41835

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Apache Struts
 

Affected Versions

Apache Software Foundation Apache Struts:

Exploit Probability

EPSS
0.22%
Percentile
44.82%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.