Vulnerability-Lookup

GHSA-XVQG-MV25-RWVW

Vulnerability from github – Published: 2022-09-15 03:26 – Updated: 2022-10-07 16:25

Summary

Parsing issue in matrix-org/node-irc leading to room takeovers

Details

Impact

Attackers can specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them to grant themselves permissions in the channel.

Patched

The vulnerability has been patched in matrix-appservice-irc 0.35.0.

Workarounds

Disable dynamic channel joining via dynamicChannels.enabled to prevent users from joining new channels, which prevents any new channels being bridged outside of what is already bridged, and what is specified in the config.

References

https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity

Credits

Discovered and reported by Val Lorentz.

For more information

If you have any questions or comments about this advisory email us at security@matrix.org.

Severity

8.8 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "matrix-appservice-irc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.35.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-39203"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-15T03:26:10Z",
    "nvd_published_at": "2022-09-13T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nAttackers can specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them to grant themselves permissions in the channel.\n\n### Patched\n\nThe vulnerability has been patched in matrix-appservice-irc 0.35.0.\n\n### Workarounds\n\nDisable dynamic channel joining via `dynamicChannels.enabled` to prevent users from joining new channels, which prevents any new channels being bridged outside of what is already bridged, and what is specified in the config.\n\n### References\n\n- https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity\n\n### Credits\n\nDiscovered and reported by [Val Lorentz](https://valentin-lorentz.fr/).\n\n### For more information\n\nIf you have any questions or comments about this advisory email us at [security@matrix.org](mailto:security@matrix.org).",
  "id": "GHSA-xvqg-mv25-rwvw",
  "modified": "2022-10-07T16:25:29Z",
  "published": "2022-09-15T03:26:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-xvqg-mv25-rwvw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39203"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/matrix-appservice-irc"
    },
    {
      "type": "WEB",
      "url": "https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Parsing issue in matrix-org/node-irc leading to room takeovers"
}

CVE-2022-39203 (GCVE-0-2022-39203)

Vulnerability from cvelistv5 – Published: 2022-09-13 18:15 – Updated: 2025-04-23 17:11

Title

Parsing issue in matrix-org/node-irc leading to room takeovers

Summary

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix. Attackers can specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them to grant themselves permissions in the channel. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround operators may disable dynamic channel joining via `dynamicChannels.enabled` to prevent users from joining new channels, which prevents any new channels being bridged outside of what is already bridged, and what is specified in the config.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 15:49 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://matrix.org/blog/2022/09/13/security-relea…	x_refsource_MISC
https://github.com/matrix-org/matrix-appservice-i…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
matrix-org	matrix-appservice-irc	Affected: < 0.35.0

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-03T12:00:42.590Z",
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            "url": "https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity/"
          },
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-xvqg-mv25-rwvw"
          }
        ],
        "title": "CVE Program Container"
      },
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        "metrics": [
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              "content": {
                "id": "CVE-2022-39203",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:49:15.666151Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T17:11:08.544Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "matrix-appservice-irc",
          "vendor": "matrix-org",
          "versions": [
            {
              "status": "affected",
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        }
      ],
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      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "version": "3.1"
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      "problemTypes": [
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      "providerMetadata": {
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        },
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          "tags": [
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          ],
          "url": "https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-xvqg-mv25-rwvw"
        }
      ],
      "source": {
        "advisory": "GHSA-xvqg-mv25-rwvw",
        "discovery": "UNKNOWN"
      },
      "title": "Parsing issue in matrix-org/node-irc leading to room takeovers",
      "x_legacyV4Record": {
        "CVE_data_meta": {
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          "ID": "CVE-2022-39203",
          "STATE": "PUBLIC",
          "TITLE": "Parsing issue in matrix-org/node-irc leading to room takeovers"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "matrix-appservice-irc",
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                          {
                            "version_value": "\u003c 0.35.0"
                          }
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}

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.

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-XVQG-MV25-RWVW

Impact

Patched

Workarounds

References

Credits

For more information

CVE-2022-39203 (GCVE-0-2022-39203)

Tags

Sightings

Nomenclature

Related by attack behaviour