Vulnerabilites related to nghttp2 - nghttp2
CVE-2020-11080 (GCVE-0-2020-11080)
Vulnerability from cvelistv5
Published
2020-06-03 00:00
Modified
2025-06-09 15:45
Severity ?
3.7 (Low) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-707 - Improper Enforcement of Message or Data Structure
Summary
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
References
Impacted products
Vendor Product Version
nghttp2 nghttp2 Version: < 1.41.0
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CVE-2016-1544 (GCVE-0-2016-1544)
Vulnerability from cvelistv5
Published
2020-02-06 14:20
Modified
2024-08-05 23:02
Severity ?
CWE
  • Other
Summary
nghttp2 before 1.7.1 allows remote attackers to cause a denial of service (memory exhaustion).
References
Impacted products
Vendor Product Version
nghttp2 nghttp2 Version: before 1.7.1
 Create a notification for this product.
Show details on NVD website

To clipboard 

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CVE-2024-28182 (GCVE-0-2024-28182)
Vulnerability from cvelistv5
Published
2024-04-04 14:41
Modified
2025-11-04 18:30
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability.
References
Impacted products
Vendor Product Version
nghttp2 nghttp2 Version: < 1.61.0
 Create a notification for this product.
Show details on NVD website

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          "value": "nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync.  This causes excessive CPU usage to decode HPACK stream. nghttp2 v1.61.0 mitigates this vulnerability by limiting the number of CONTINUATION frames it accepts per stream. There is no workaround for this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-01T18:12:22.033Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-x6x3-gv8h-m57q"
        },
        {
          "name": "https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nghttp2/nghttp2/commit/00201ecd8f982da3b67d4f6868af72a1b03b14e0"
        },
        {
          "name": "https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nghttp2/nghttp2/commit/d71a4668c6bead55805d18810d633fbb98315af9"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGOME6ZXJG7664IPQNVE3DL67E3YP3HY/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J6ZMXUGB66VAXDW5J6QSTHM5ET25FGSA/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXJO2EASHM2OQQLGVDY5ZSO7UVDVHTDK/"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00026.html"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16"
        }
      ],
      "source": {
        "advisory": "GHSA-x6x3-gv8h-m57q",
        "discovery": "UNKNOWN"
      },
      "title": "Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-28182",
    "datePublished": "2024-04-04T14:41:36.587Z",
    "dateReserved": "2024-03-06T17:35:00.857Z",
    "dateUpdated": "2025-11-04T18:30:26.332Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}