Vulnerability-Lookup

ubuntu-cve-2020-11080

Vulnerability from osv_ubuntu

Published

2020-06-03 23:15

Modified

2026-04-22 07:39

Summary

Details

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.

Severity

3.7 (Low)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2020-11080	REPORT
	https://nodejs.org/en/blog/vulnerability/june-202…	REPORT
	https://github.com/nghttp2/nghttp2/commit/336a98f…	REPORT
	https://github.com/nghttp2/nghttp2/commit/f8da73b…	REPORT
	https://github.com/nghttp2/nghttp2/security/advis…	REPORT
	https://ubuntu.com/security/notices/USN-6142-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2020-11080	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.7.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.1-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.7-1",
        "1.3.4-2",
        "1.4.0-1",
        "1.4.0-2",
        "1.5.0-2",
        "1.6.0-1",
        "1.7.0-1",
        "1.7.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.30.0-1ubuntu1+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.30.0-1ubuntu1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.25.0-1",
        "1.27.0-1",
        "1.28.0-1",
        "1.29.0-1",
        "1.29.0-1build1",
        "1.30.0-1",
        "1.30.0-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.40.0-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.40.0-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.40.0-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.39.2-1",
        "1.40.0-1",
        "1.40.0-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "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., \u003e 32), then drop the connection.",
  "id": "UBUNTU-CVE-2020-11080",
  "modified": "2026-04-22T07:39:22Z",
  "published": "2020-06-03T23:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11080"
    },
    {
      "type": "REPORT",
      "url": "https://nodejs.org/en/blog/vulnerability/june-2020-security-releases/#http-2-large-settings-frame-dos-low-cve-2020-11080"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6142-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-11080"
    }
  ],
  "related": [
    "USN-6142-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-11080"
  ]
}

CVE-2020-11080 (GCVE-0-2020-11080)

Vulnerability from cvelistv5 – Published: 2020-06-03 00:00 – Updated: 2025-06-09 15:45

Title

Denial of service in nghttp2

Summary

Severity

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-707 - Improper Enforcement of Message or Data Structure

Assigner

GitHub_M

References

14 references

URL	Tags
https://www.debian.org/security/2020/dsa-4696	vendor-advisory
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.oracle.com/security-alerts/cpujul2020.html
https://github.com/nghttp2/nghttp2/security/advis…
https://github.com/nghttp2/nghttp2/commit/336a98f…
https://github.com/nghttp2/nghttp2/commit/f8da73b…
https://www.oracle.com/security-alerts/cpuoct2020.html
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://www.oracle.com/security-alerts/cpuapr2022.html
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
nghttp2	nghttp2	Affected: < 1.41.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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          },
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          },
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          },
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            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
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            "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html"
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        "title": "CVE Program Container"
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-11080",
                "options": [
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                  }
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                "role": "CISA Coordinator",
                "timestamp": "2025-06-09T15:44:48.717109Z",
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    "cna": {
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          "value": "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., \u003e 32), then drop the connection."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
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      },
      "references": [
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          "name": "DSA-4696",
          "tags": [
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        },
        {
          "name": "openSUSE-SU-2020:0802",
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          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html"
        },
        {
          "name": "FEDORA-2020-f7d15c8b77",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAC2AA36OTRHKSVM5OV7TTVB3CZIGEFL/"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
        },
        {
          "url": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr"
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          ],
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        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
        },
        {
          "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
        },
        {
          "name": "[debian-lts-announce] 20211017 [SECURITY] [DLA 2786-1] nghttp2 security update",
          "tags": [
            "mailing-list"
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          "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "name": "[debian-lts-announce] 20231016 [SECURITY] [DLA 3621-1] nghttp2 security update",
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      "source": {
        "advisory": "GHSA-q5wr-xfw9-q7xr",
        "discovery": "UNKNOWN"
      },
      "title": "Denial of service in nghttp2"
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-11080",
    "datePublished": "2020-06-03T00:00:00.000Z",
    "dateReserved": "2020-03-30T00:00:00.000Z",
    "dateUpdated": "2025-06-09T15:45:50.711Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-6142-1

Vulnerability from osv_ubuntu

Published

2023-06-06 08:20

Modified

2026-06-25 10:46

Summary

nghttp2 vulnerability

Details

Gal Goldshtein discovered that nghttp2 incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service.

References

URL

Type

	https://ubuntu.com/security/notices/USN-6142-1	ADVISORY
	https://ubuntu.com/security/CVE-2020-11080	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11080",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.7.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.7.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
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            },
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          "type": "ECOSYSTEM"
        }
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        "1.3.4-2",
        "1.4.0-1",
        "1.4.0-2",
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        "1.6.0-1",
        "1.7.0-1",
        "1.7.1-1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11080",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.30.0-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.30.0-1ubuntu1+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.30.0-1ubuntu1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.25.0-1",
        "1.27.0-1",
        "1.28.0-1",
        "1.29.0-1",
        "1.29.0-1build1",
        "1.30.0-1",
        "1.30.0-1ubuntu1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11080",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libnghttp2-14",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-client",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-proxy",
            "binary_version": "1.40.0-1ubuntu0.1"
          },
          {
            "binary_name": "nghttp2-server",
            "binary_version": "1.40.0-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "nghttp2",
        "purl": "pkg:deb/ubuntu/nghttp2@1.40.0-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.40.0-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.39.2-1",
        "1.40.0-1",
        "1.40.0-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Gal Goldshtein discovered that nghttp2 incorrectly handled certain inputs. If\na user or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to cause a\ndenial of service.\n",
  "id": "USN-6142-1",
  "modified": "2026-06-25T10:46:13Z",
  "published": "2023-06-06T08:20:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6142-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11080"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "nghttp2 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-11080"
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

ubuntu-cve-2020-11080

Vulnerability from osv_ubuntu

CVE-2020-11080 (GCVE-0-2020-11080)

usn-6142-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature