UBUNTU-CVE-2022-39249 (CVE-2022-39249)

Vulnerability from osv_ubuntu – Published: 2022-09-28 20:15 – Updated: 2026-04-22 07:41 – Source website
VLAI
Details

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end. Starting with version 19.7.0, the default policy for accepting key forwards has been made more strict in the matrix-js-sdk. matrix-js-sdk will now only accept forwarded keys in response to previously issued requests and only from own, verified devices. The SDK now sets a trusted flag on the decrypted message upon decryption, based on whether the key used to decrypt the message was received from a trusted source. Clients need to ensure that messages decrypted with a key with trusted = false are decorated appropriately, for example, by showing a warning for such messages. This attack requires coordination between a malicious homeserver and an attacker, and those who trust your homeservers do not need a workaround.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "thunderbird",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          },
          {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:102.4.2+build2-0ubuntu0.18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "thunderbird",
        "purl": "pkg:deb/ubuntu/thunderbird@1:102.4.2+build2-0ubuntu0.18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:102.4.2+build2-0ubuntu0.18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:52.4.0+build1-0ubuntu2",
        "1:52.6.0+build1-0ubuntu1",
        "1:52.7.0+build1-0ubuntu1",
        "1:52.8.0+build1-0ubuntu0.18.04.1",
        "1:52.9.1+build3-0ubuntu0.18.04.1",
        "1:60.2.1+build1-0ubuntu0.18.04.2",
        "1:60.4.0+build2-0ubuntu0.18.04.1",
        "1:60.5.1+build2-0ubuntu0.18.04.1",
        "1:60.6.1+build2-0ubuntu0.18.04.1",
        "1:60.7.0+build1-0ubuntu0.18.04.1",
        "1:60.7.1+build1-0ubuntu0.18.04.1",
        "1:60.7.2+build2-0ubuntu0.18.04.1",
        "1:60.8.0+build1-0ubuntu0.18.04.1",
        "1:60.9.0+build1-0ubuntu0.18.04.1",
        "1:68.2.1+build1-0ubuntu0.18.04.1",
        "1:68.2.2+build1-0ubuntu0.18.04.1",
        "1:68.4.1+build1-0ubuntu0.18.04.1",
        "1:68.7.0+build1-0ubuntu0.18.04.1",
        "1:68.8.0+build2-0ubuntu0.18.04.2",
        "1:68.10.0+build1-0ubuntu0.18.04.1",
        "1:78.8.1+build1-0ubuntu0.18.04.1",
        "1:78.11.0+build1-0ubuntu0.18.04.2",
        "1:78.13.0+build1-0ubuntu0.18.04.1",
        "1:78.14.0+build1-0ubuntu0.18.04.1",
        "1:78.14.0+build1-0ubuntu0.18.04.2",
        "1:91.5.0+build1-0ubuntu0.18.04.1",
        "1:91.7.0+build2-0ubuntu0.18.04.1",
        "1:91.8.1+build1-0ubuntu0.18.04.1",
        "1:91.9.1+build1-0ubuntu0.18.04.1",
        "1:91.11.0+build2-0ubuntu0.18.04.1",
        "1:102.2.2+build1-0ubuntu0.18.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "thunderbird",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          },
          {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:102.4.2+build2-0ubuntu0.20.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "thunderbird",
        "purl": "pkg:deb/ubuntu/thunderbird@1:102.4.2+build2-0ubuntu0.20.04.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:102.4.2+build2-0ubuntu0.20.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:68.1.2+build1-0ubuntu1",
        "1:68.1.2+build1-0ubuntu2",
        "1:68.2.1+build1-0ubuntu1",
        "1:68.2.2+build1-0ubuntu1",
        "1:68.3.0+build2-0ubuntu1",
        "1:68.3.1+build1-0ubuntu2",
        "1:68.4.1+build1-0ubuntu1",
        "1:68.4.2+build2-0ubuntu1",
        "1:68.5.0+build1-0ubuntu1",
        "1:68.6.0+build2-0ubuntu1",
        "1:68.7.0+build1-0ubuntu1",
        "1:68.7.0+build1-0ubuntu2",
        "1:68.8.0+build2-0ubuntu0.20.04.2",
        "1:68.10.0+build1-0ubuntu0.20.04.1",
        "1:78.7.1+build1-0ubuntu0.20.04.1",
        "1:78.8.1+build1-0ubuntu0.20.04.1",
        "1:78.11.0+build1-0ubuntu0.20.04.2",
        "1:78.13.0+build1-0ubuntu0.20.04.2",
        "1:78.14.0+build1-0ubuntu0.20.04.1",
        "1:78.14.0+build1-0ubuntu0.20.04.2",
        "1:91.5.0+build1-0ubuntu0.20.04.1",
        "1:91.7.0+build2-0ubuntu0.20.04.1",
        "1:91.8.1+build1-0ubuntu0.20.04.1",
        "1:91.9.1+build1-0ubuntu0.20.04.1",
        "1:91.11.0+build2-0ubuntu0.20.04.1",
        "1:102.2.2+build1-0ubuntu0.20.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjs-matrix-js-sdk",
            "binary_version": "0.9.2-1"
          },
          {
            "binary_name": "node-matrix-js-sdk",
            "binary_version": "0.9.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-matrix-js-sdk",
        "purl": "pkg:deb/ubuntu/node-matrix-js-sdk@0.9.2-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjs-matrix-js-sdk",
            "binary_version": "9.11.0+~cs9.9.16-1"
          },
          {
            "binary_name": "node-matrix-js-sdk",
            "binary_version": "9.11.0+~cs9.9.16-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-matrix-js-sdk",
        "purl": "pkg:deb/ubuntu/node-matrix-js-sdk@9.11.0+~cs9.9.16-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.3.0+~cs9.9.16-2",
        "9.11.0+~cs9.9.16-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "thunderbird",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:102.4.2+build2-0ubuntu0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "thunderbird",
        "purl": "pkg:deb/ubuntu/thunderbird@1:102.4.2+build2-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
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        "1:91.3.0+build2-0ubuntu1",
        "1:91.3.1+build1-0ubuntu1",
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        "1:91.4.0+build2-0ubuntu1",
        "1:91.5.0+build1-0ubuntu1",
        "1:91.5.1+build1-0ubuntu1",
        "1:91.6.1+build1-0ubuntu1",
        "1:91.7.0+build1-0ubuntu1",
        "1:91.7.0+build2-0ubuntu1",
        "1:91.8.0+build2-0ubuntu1",
        "1:91.9.1+build1-0ubuntu0.22.04.1",
        "1:91.11.0+build2-0ubuntu0.22.04.1",
        "1:102.2.2+build1-0ubuntu0.22.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libjs-matrix-js-sdk",
            "binary_version": "9.11.0+~cs9.9.16-2"
          },
          {
            "binary_name": "node-matrix-js-sdk",
            "binary_version": "9.11.0+~cs9.9.16-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-matrix-js-sdk",
        "purl": "pkg:deb/ubuntu/node-matrix-js-sdk@9.11.0+~cs9.9.16-2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.11.0+~cs9.9.16-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end. Starting with version 19.7.0, the default policy for accepting key forwards has been made more strict in the matrix-js-sdk. matrix-js-sdk will now only accept forwarded keys in response to previously issued requests and only from own, verified devices. The SDK now sets a `trusted` flag on the decrypted message upon decryption, based on whether the key used to decrypt the message was received from a trusted source. Clients need to ensure that messages decrypted with a key with `trusted = false` are decorated appropriately, for example, by showing a warning for such messages. This attack requires coordination between a malicious homeserver and an attacker, and those who trust your homeservers do not need a workaround.",
  "id": "UBUNTU-CVE-2022-39249",
  "modified": "2026-04-22T07:41:40Z",
  "published": "2022-09-28T20:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-39249"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6263-x97c-c4gg"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/matrix-org/matrix-spec-proposals/pull/3061"
    },
    {
      "type": "REPORT",
      "url": "https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5724-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-39249"
    }
  ],
  "related": [
    "USN-5724-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-39249"
  ]
}



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