undici vulnerable to Denial of Service via unbounded memory in the EventSource parser
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| undici | undici | unaffected |
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Configuration 1 [-]
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No data.
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| Source | ID | Title |
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Github GHSA |
GHSA-4qv8-2p9j-2685 | undici vulnerable to Denial of Service via unbounded memory in the EventSource parser |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.321% probability within 30 days)
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Undici
Undici undici |
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Undici
Undici undici |
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Nodejs
Nodejs undici |
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| CPEs | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Nodejs
Nodejs undici |
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| Metrics |
ssvc
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| Metrics |
threat_severity
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threat_severity
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| Description | undici is an HTTP client library for Node.js. In versions 6.5.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its EventSource client can be driven to exhaust process memory by a malicious or compromised Server-Sent Events peer. By sending millions of tiny completed data fields with no blank event separator, or a single unfinished line split across many chunks, the parser retains a growing amount of per-field and per-chunk state that the byte-based maxEventSize and maxResponseSize limits do not bound, and because maxResponseSize is enforced on the compressed body before decompression, a small compressed response can expand into enough retained memory to terminate the process. An application only needs to maintain an EventSource connection to an untrusted peer, which controls only the response, and availability is the only impact. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, which bound the retained parser state independently of the byte limits, and users should upgrade to one of those versions or later. There is no workaround. | |
| Title | undici vulnerable to Denial of Service via unbounded memory in the EventSource parser | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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