Memory exhaustion via unbounded sparse slice allocation
Published Jul 1, 2024 · Updated Aug 2, 2024
Resource exhaustion in Gorilla Web Toolkit's Gorilla Schema before 1.4.1 allows remote attackers to exhaust memory via crafted form values. Decoder.Decode parses a large numeric index from a dotted form key and grows the destination slice of structs to that index without a size limit. Exposure requires an application to decode attacker-controlled form data into a struct containing such a field; allocation can exhaust process memory and interrupt the service.
Summary
What happened
Resource exhaustion in Gorilla Web Toolkit's Gorilla Schema before 1.4.1 allows remote attackers to exhaust memory via crafted form values. Decoder.Decode parses a large numeric index from a dotted form key and grows the destination slice of structs to that index without a size limit. Exposure requires an application to decode attacker-controlled form data into a struct containing such a field; allocation can exhaust process memory and interrupt the service.
The record
- CVE
- CVE-2024-37298
- Published
- Jul 1, 2024
- Updated
- Aug 2, 2024
- Vendor
- Gorilla Web Toolkit
- Product
- Gorilla Schema
- Classifications
- CWE-770, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 1, 2024CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.4.1
- Affected versionversion=< 1.4.1
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
- Upstream sparse-slice allocation proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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