ubuntu-cve-2022-30780
Vulnerability from osv_ubuntu
Published
2022-06-11 15:15
Modified
2026-04-22 07:41
Summary
Details

Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.

Severity
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
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lighttpd",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          },
          {
            "binary_name": "lighttpd-mod-cml",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          },
          {
            "binary_name": "lighttpd-mod-magnet",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          },
          {
            "binary_name": "lighttpd-mod-mysql-vhost",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          },
          {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          },
          {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "lighttpd",
        "purl": "pkg:deb/ubuntu/lighttpd@1.4.35-4ubuntu2.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.35-4ubuntu1",
        "1.4.35-4ubuntu2",
        "1.4.35-4ubuntu2.1",
        "1.4.35-4ubuntu2.1+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.",
  "id": "UBUNTU-CVE-2022-30780",
  "modified": "2026-04-22T07:41:35Z",
  "published": "2022-06-11T15:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-30780"
    },
    {
      "type": "REPORT",
      "url": "https://podalirius.net/en/cves/2022-30780/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service"
    },
    {
      "type": "REPORT",
      "url": "https://redmine.lighttpd.net/issues/3059"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lighttpd/lighttpd1.4"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-30780"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "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-2022-30780"
  ]
}



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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

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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.