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CVE-2022-41723 (GCVE-0-2022-41723)

Vulnerability from cvelistv5 – Published: 2023-02-28 17:19 – Updated: 2025-05-05 16:12
VLAI
Title
Denial of service via crafted HTTP/2 stream in net/http and golang.org/x/net
Summary
A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:26 UTC
CWE
  • CWE 400: Uncontrolled Resource Consumption
  • NVD-CWE-Other
Assigner
References
Impacted products
Vendor Product Version CPE status
Go standard library net/http Affected: 0 , < 1.19.6 (semver)
Affected: 1.20.0-0 , < 1.20.1 (semver)
guessed Create a notification for this product.
golang.org/x/net golang.org/x/net/http2 Affected: 0 , < 0.7.0 (semver)
guessed Create a notification for this product.
golang.org/x/net golang.org/x/net/http2/hpack Affected: 0 , < 0.7.0 (semver)
guessed Create a notification for this product.
Credits
Philippe Antoine (Catena cyber)
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-07T02:21:33+00:00",
      "cve": "CVE-2022-41723",
      "id": "CVE-2022-41723",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "1556",
      "product_status:known_affected": "287",
      "product_status:known_not_affected": "11951",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "golang.org/x/net/http2: avoid quadratic complexity in HPACK decoding",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-41723.json",
      "version": "3"
    },
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{\"name\": \"Decoder.DecodeFull\"}, {\"name\": \"Decoder.Write\"}]}], \"references\": [{\"url\": \"https://go.dev/issue/57855\"}, {\"url\": \"https://go.dev/cl/468135\"}, {\"url\": \"https://go.dev/cl/468295\"}, {\"url\": \"https://groups.google.com/g/golang-announce/c/V0aBFqaFs_E\"}, {\"url\": \"https://pkg.go.dev/vuln/GO-2023-1571\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4MA5XS5DAOJ5PKKNG5TUXKPQOFHT5VBC/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RLBQ3A7ROLEQXQLXFDLNJ7MYPKG5GULE/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGW7GE2Z32ZT47UFAQFDRQE33B7Q7LMT/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XX3IMUTZKRQ73PBZM4E2JP4BKYH4C6XE/\"}, {\"url\": \"https://www.couchbase.com/alerts/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4BUK2ZIAGCULOOYDNH25JPU6JBES5NF2/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T7N5GV4CHH6WAGX3GFMDD3COEOVCZ4RI/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/REMHVVIBDNKSRKNOTV7EQSB7CYQWOUOU/\"}, {\"url\": \"https://security.gentoo.org/glsa/202311-09\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE 400: Uncontrolled Resource Consumption\"}]}], \"providerMetadata\": {\"orgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"shortName\": \"Go\", \"dateUpdated\": \"2023-11-25T11:09:48.448Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-41723\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-05T16:12:28.159Z\", \"dateReserved\": \"2022-09-28T17:00:06.610Z\", \"assignerOrgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"datePublished\": \"2023-02-28T17:19:45.801Z\", \"assignerShortName\": \"Go\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.