cve-2025-58369
Vulnerability from cvelistv5
Published
2025-09-05 21:59
Modified
2025-09-08 20:09
Summary
fs2: Half-shutdown of socket during TLS handshake may result in spin loop on opposite side
Impacted products
typelevelfs2
Show details on NVD website


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                "id": "CVE-2025-58369",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                "timestamp": "2025-09-08T20:09:25.588603Z",
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          "product": "fs2",
          "vendor": "typelevel",
          "versions": [
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              "version": "\u003c 3.12.2"
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          "value": "fs2 is a compositional, streaming I/O library for Scala. Versions 3.12.2 and lower and 3.13.0-M1 through 3.13.0-M6 is vulnerable to denial of service attacks though TLS sessions using fs2-io on the JVM using the fs2.io.net.tls package. When establishing a TLS session, if one side of the connection shuts down `write` while the peer side is awaiting more data to progress the TLS handshake, the peer side will spin loop on the socket read, fully utilizing a CPU. The CPU is consumed until the overall connection is closed, potentially shutting down a fs2-io powered server. This issue is fixed in versions 3.12.1 and 3.13.0-M7."
        }
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          "name": "https://github.com/typelevel/fs2/security/advisories/GHSA-rrw2-px9j-qffj",
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      "source": {
        "advisory": "GHSA-rrw2-px9j-qffj",
        "discovery": "UNKNOWN"
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      "title": "fs2: Half-shutdown of socket during TLS handshake may result in spin loop on opposite side"
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-58369",
    "datePublished": "2025-09-05T21:59:58.981Z",
    "dateReserved": "2025-08-29T16:19:59.012Z",
    "dateUpdated": "2025-09-08T20:09:32.825Z",
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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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