Unauthenticated service interruption via multipart memory exhaustion
Published Sep 27, 2023 · Updated Aug 2, 2024
Uncontrolled memory allocation in Undertow before 2.2.24.Final allows remote attackers to interrupt service via multipart requests. MultiPartParserDefinition keeps filename-less form fields in a byte-array buffer because disk spooling requires a non-null filename, so fileSizeThreshold does not bound memory use. Exposure requires a servlet annotated with @MultipartConfig; a large filename-less field can exhaust heap memory and stop request processing.
Summary
What happened
Uncontrolled memory allocation in Undertow before 2.2.24.Final allows remote attackers to interrupt service via multipart requests. MultiPartParserDefinition keeps filename-less form fields in a byte-array buffer because disk spooling requires a non-null filename, so fileSizeThreshold does not bound memory use. Exposure requires a servlet annotated with @MultipartConfig; a large filename-less field can exhaust heap memory and stop request processing.
The record
- CVE
- CVE-2023-3223
- Published
- Sep 27, 2023
- Updated
- Aug 2, 2024
- Vendor
- Red Hat
- Product
- Red Hat Process Automation 7
- Classifications
- CWE-789, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 27, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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