Process-memory disclosure via oversized backing buffer
Published Jul 8, 2024 · Updated Aug 28, 2024
Information disclosure in Node.js Undici 6.14.0 through 6.19.1 allows remote authenticated users to read process memory via fetch(). The body mixin returned a pooled Buffer's entire underlying ArrayBuffer instead of slicing to its byte offset and length, exposing unrelated bytes. Reachability depends on network and process conditions and on an application consuming response.arrayBuffer(); leaked bytes can include server logs and HTTP data.
Summary
What happened
Information disclosure in Node.js Undici 6.14.0 through 6.19.1 allows remote authenticated users to read process memory via fetch(). The body mixin returned a pooled Buffer's entire underlying ArrayBuffer instead of slicing to its byte offset and length, exposing unrelated bytes. Reachability depends on network and process conditions and on an application consuming response.arrayBuffer(); leaked bytes can include server logs and HTTP data.
The record
- CVE
- CVE-2024-38372
- Published
- Jul 8, 2024
- Updated
- Aug 28, 2024
- Vendor
- Node.js
- Product
- Undici
- Classifications
- CWE-201, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 8, 2024CVE publishedPublication date reported by the CVE source.
- Aug 28, 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=>= 6.14.0, < 6.19.2
- Affected versionversion=6.14.0 <6.19.2
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
- fetch arrayBuffer() process-memory leak reproducerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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