Vulnerabilites related to matrix-org - matrix-appservice-bridge
CVE-2021-32659 (GCVE-0-2021-32659)
Vulnerability from cvelistv5
Published
2021-06-16 18:45
Modified
2024-08-03 23:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-306 - Missing Authentication for Critical Function
Summary
Matrix-appservice-bridge is the bridging service for the Matrix communication program's application services. In versions 2.6.0 and earlier, if a bridge has room upgrade handling turned on in the configuration (the `roomUpgradeOpts` key when instantiating a new `Bridge` instance.), any `m.room.tombstone` event it encounters will be used to unbridge the current room and bridge into the target room. However, the target room `m.room.create` event is not checked to verify if the `predecessor` field contains the previous room. This means that any malicious admin of a bridged room can repoint the traffic to a different room without the new room being aware. Versions 2.6.1 and greater are patched. As a workaround, disabling the automatic room upgrade handling can be done by removing the `roomUpgradeOpts` key from the `Bridge` class options.
References
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
matrix-org | matrix-appservice-bridge |
Version: < 2.6.1 |
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-03T23:25:31.074Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "matrix-appservice-bridge", "vendor": "matrix-org", "versions": [ { "status": "affected", "version": "\u003c 2.6.1" } ] } ], "descriptions": [ { "lang": "en", "value": "Matrix-appservice-bridge is the bridging service for the Matrix communication program\u0027s application services. In versions 2.6.0 and earlier, if a bridge has room upgrade handling turned on in the configuration (the `roomUpgradeOpts` key when instantiating a new `Bridge` instance.), any `m.room.tombstone` event it encounters will be used to unbridge the current room and bridge into the target room. However, the target room `m.room.create` event is not checked to verify if the `predecessor` field contains the previous room. This means that any malicious admin of a bridged room can repoint the traffic to a different room without the new room being aware. Versions 2.6.1 and greater are patched. As a workaround, disabling the automatic room upgrade handling can be done by removing the `roomUpgradeOpts` key from the `Bridge` class options." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-306", "description": "CWE-306: Missing Authentication for Critical Function", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-06-16T18:45:11", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1" } ], "source": { "advisory": "GHSA-35g4-qx3c-vjhx", "discovery": "UNKNOWN" }, "title": "Automatic room upgrade handling can be used maliciously to bridge a room non-consentually ", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32659", "STATE": "PUBLIC", "TITLE": "Automatic room upgrade handling can be used maliciously to bridge a room non-consentually " }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "matrix-appservice-bridge", "version": { "version_data": [ { "version_value": "\u003c 2.6.1" } ] } } ] }, "vendor_name": "matrix-org" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Matrix-appservice-bridge is the bridging service for the Matrix communication program\u0027s application services. In versions 2.6.0 and earlier, if a bridge has room upgrade handling turned on in the configuration (the `roomUpgradeOpts` key when instantiating a new `Bridge` instance.), any `m.room.tombstone` event it encounters will be used to unbridge the current room and bridge into the target room. However, the target room `m.room.create` event is not checked to verify if the `predecessor` field contains the previous room. This means that any malicious admin of a bridged room can repoint the traffic to a different room without the new room being aware. Versions 2.6.1 and greater are patched. As a workaround, disabling the automatic room upgrade handling can be done by removing the `roomUpgradeOpts` key from the `Bridge` class options." } ] }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-306: Missing Authentication for Critical Function" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx", "refsource": "CONFIRM", "url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx" }, { "name": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f", "refsource": "MISC", "url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f" }, { "name": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1", "refsource": "MISC", "url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1" } ] }, "source": { "advisory": "GHSA-35g4-qx3c-vjhx", "discovery": "UNKNOWN" } } } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32659", "datePublished": "2021-06-16T18:45:11", "dateReserved": "2021-05-12T00:00:00", "dateUpdated": "2024-08-03T23:25:31.074Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
CVE-2023-38691 (GCVE-0-2023-38691)
Vulnerability from cvelistv5
Published
2023-08-04 16:34
Modified
2024-10-07 13:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-287 - Improper Authentication
Summary
matrix-appservice-bridge provides an API for setting up bridges. Starting in version 4.0.0 and prior to versions 8.1.2 and 9.0.1, a malicious Matrix server can use a foreign user's MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API. The library does not check that the servername part of the `sub` parameter (containing the user's *claimed* MXID) is the the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests. Versions 8.1.2 and 9.0.1 contain a patch. As a workaround, disable the provisioning API.
References
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
matrix-org | matrix-appservice-bridge |
Version: >= 4.0.0, < 8.1.2 Version: = 9.0.0 |
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-02T17:46:56.516Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "name": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-vc7j-h8xg-fv5x", "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-vc7j-h8xg-fv5x" }, { "name": "https://github.com/matrix-org/matrix-appservice-bridge/commit/4c6723a5e7beda65cdf1ae5dbb882e8beaac8552", "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/4c6723a5e7beda65cdf1ae5dbb882e8beaac8552" } ], "title": "CVE Program Container" }, { "metrics": [ { "other": { "content": { "id": "CVE-2023-38691", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-10-07T13:01:18.486033Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-10-07T13:01:29.642Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" } ], "cna": { "affected": [ { "product": "matrix-appservice-bridge", "vendor": "matrix-org", "versions": [ { "status": "affected", "version": "\u003e= 4.0.0, \u003c 8.1.2" }, { "status": "affected", "version": "= 9.0.0" } ] } ], "descriptions": [ { "lang": "en", "value": "matrix-appservice-bridge provides an API for setting up bridges. Starting in version 4.0.0 and prior to versions 8.1.2 and 9.0.1, a malicious Matrix server can use a foreign user\u0027s MXID in an OpenID exchange, allowing a bad actor to impersonate users when using the provisioning API. The library does not check that the servername part of the `sub` parameter (containing the user\u0027s *claimed* MXID) is the the same as the servername we are talking to. A malicious actor could spin up a server on any given domain, respond with a `sub` parameter according to the user they want to act as and use the resulting token to perform provisioning requests. Versions 8.1.2 and 9.0.1 contain a patch. As a workaround, disable the provisioning API." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-287", "description": "CWE-287: Improper Authentication", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2023-08-04T16:34:54.312Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "name": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-vc7j-h8xg-fv5x", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-vc7j-h8xg-fv5x" }, { "name": "https://github.com/matrix-org/matrix-appservice-bridge/commit/4c6723a5e7beda65cdf1ae5dbb882e8beaac8552", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/4c6723a5e7beda65cdf1ae5dbb882e8beaac8552" } ], "source": { "advisory": "GHSA-vc7j-h8xg-fv5x", "discovery": "UNKNOWN" }, "title": "matrix-appservice-bridge doesn\u0027t verify the sub parameter of an openId token exhange, allowing unauthorized access to provisioning APIs" } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2023-38691", "datePublished": "2023-08-04T16:34:54.312Z", "dateReserved": "2023-07-24T16:19:28.364Z", "dateUpdated": "2024-10-07T13:01:29.642Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }