ubuntu-cve-2019-12855
Vulnerability from osv_ubuntu
Published
2019-06-16 12:29
Modified
2025-09-08 16:45
Summary
Details

In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.

Severity
7.4 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-twisted",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-bin",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-conch",
            "binary_version": "1:13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-core",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-lore",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-mail",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-names",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-news",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-runner",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-web",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          },
          {
            "binary_name": "python-twisted-words",
            "binary_version": "13.2.0-1ubuntu1.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "twisted",
        "purl": "pkg:deb/ubuntu/twisted@13.2.0-1ubuntu1.2+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13.2.0-1ubuntu1.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "13.0.0-1ubuntu1",
        "13.2.0-1ubuntu1",
        "13.2.0-1ubuntu1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python-twisted",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-bin",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-conch",
            "binary_version": "1:16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-core",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-mail",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-names",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-news",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-runner",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-web",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python-twisted-words",
            "binary_version": "16.0.0-1ubuntu0.4"
          },
          {
            "binary_name": "python3-twisted",
            "binary_version": "16.0.0-1ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "twisted",
        "purl": "pkg:deb/ubuntu/twisted@16.0.0-1ubuntu0.4?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "16.0.0-1ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "15.2.1-1ubuntu2",
        "15.5.0-1",
        "15.5.0-2",
        "15.5.0-2ubuntu1",
        "15.5.0-4",
        "16.0.0~pre1-1",
        "16.0.0~pre1-1ubuntu1",
        "16.0.0~pre1-2ubuntu1",
        "16.0.0~pre1-3",
        "16.0.0-1",
        "16.0.0-1ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "python-twisted",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-bin",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-conch",
            "binary_version": "1:17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-core",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-mail",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-names",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-news",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-runner",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-web",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python-twisted-words",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python3-twisted",
            "binary_version": "17.9.0-2ubuntu0.1"
          },
          {
            "binary_name": "python3-twisted-bin",
            "binary_version": "17.9.0-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "twisted",
        "purl": "pkg:deb/ubuntu/twisted@17.9.0-2ubuntu0.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "17.9.0-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "16.6.0-2ubuntu3",
        "17.9.0-1",
        "17.9.0-2"
      ]
    }
  ],
  "aliases": [],
  "details": "In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.",
  "id": "UBUNTU-CVE-2019-12855",
  "modified": "2025-09-08T16:45:27Z",
  "published": "2019-06-16T12:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-12855"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/twisted/twisted/pull/1147"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4308-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4308-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-12855"
    }
  ],
  "related": [
    "USN-4308-1",
    "USN-4308-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-12855"
  ]
}



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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.
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