usn-5474-1
Vulnerability from osv_ubuntu
Published
2022-06-08 19:20
Modified
2026-04-27 14:11
Summary
varnish vulnerabilities
Details

It was dicovered that Varnish Cache did not clear a pointer between the handling of one client request and the next request within the same connection. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2019-20637)

It was discovered that Varnish Cache could have an assertion failure when a TLS termination proxy uses PROXY version 2. A remote attacker could possibly use this issue to restart the daemon and cause a performance loss. (CVE-2020-11653)

It was discovered that Varnish Cache allowed request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2021-36740)

It was discovered that Varnish Cache allowed request smuggling for HTTP/1 connections. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2022-23959)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-20637",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-23959",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvarnishapi1",
            "binary_version": "5.2.1-1ubuntu0.1"
          },
          {
            "binary_name": "varnish",
            "binary_version": "5.2.1-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "varnish",
        "purl": "pkg:deb/ubuntu/varnish@5.2.1-1ubuntu0.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.1-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.0-7.1",
        "5.2.1-1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-20637",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-11653",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-36740",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-23959",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvarnishapi2",
            "binary_version": "6.2.1-2ubuntu0.1"
          },
          {
            "binary_name": "varnish",
            "binary_version": "6.2.1-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "varnish",
        "purl": "pkg:deb/ubuntu/varnish@6.2.1-2ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.2.1-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.1.1-1",
        "6.2.1-2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-23959",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvarnishapi2",
            "binary_version": "6.6.1-1ubuntu0.2"
          },
          {
            "binary_name": "varnish",
            "binary_version": "6.6.1-1ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "varnish",
        "purl": "pkg:deb/ubuntu/varnish@6.6.1-1ubuntu0.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.6.1-1ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.5.2-1",
        "6.6.1-1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was dicovered that Varnish Cache did not clear a pointer between the\nhandling of one client request and the next request within the same connection.\nA remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2019-20637)\n\nIt was discovered that Varnish Cache could have an assertion failure when a\nTLS termination proxy uses PROXY version 2. A remote attacker could possibly\nuse this issue to restart the daemon and cause a performance loss.\n(CVE-2020-11653)\n\nIt was discovered that Varnish Cache allowed request smuggling and VCL\nauthorization bypass via a large Content-Length header for a POST\nrequest. A remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2021-36740)\n\nIt was discovered that Varnish Cache allowed request smuggling for HTTP/1\nconnections. A remote attacker could possibly use this issue to obtain\nsensitive information. (CVE-2022-23959)\n",
  "id": "USN-5474-1",
  "modified": "2026-04-27T14:11:28Z",
  "published": "2022-06-08T19:20:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5474-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-20637"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11653"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-36740"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-23959"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "varnish vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2019-20637",
    "UBUNTU-CVE-2020-11653",
    "UBUNTU-CVE-2021-36740",
    "UBUNTU-CVE-2022-23959"
  ]
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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