Unauthenticated DoS via multipart data binding
Published May 12, 2022 · Updated Aug 3, 2024
Denial of service in Spring Framework before 5.3.20 or 5.2.22 allows remote attackers to interrupt service via crafted multipart uploads. Spring MVC or WebFlux data binding assigns an incoming MultipartFile or javax.servlet.Part to a model field without limiting resource use, allowing repeated multipart requests to exhaust application resources. Exploitation requires an upload endpoint that relies on this model binding; the documented impact is service interruption without data disclosure or modification.
Summary
What happened
Denial of service in Spring Framework before 5.3.20 or 5.2.22 allows remote attackers to interrupt service via crafted multipart uploads. Spring MVC or WebFlux data binding assigns an incoming MultipartFile or javax.servlet.Part to a model field without limiting resource use, allowing repeated multipart requests to exhaust application resources. Exploitation requires an upload endpoint that relies on this model binding; the documented impact is service interruption without data disclosure or modification.
The record
- CVE
- CVE-2022-22970
- Published
- May 12, 2022
- Updated
- Aug 3, 2024
- Vendor
- Spring
- Product
- Spring Framework
- Classifications
- CWE-770, T1071.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 12, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Spring Framework versions 5.3.x prior to 5.3.20, 5.2.x prior to 5.2.22 and all old and unsupported versions
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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