{ "containers": { "cna": { "affected": [ { "product": "Geyser", "vendor": "GeyserMC", "versions": [ { "status": "affected", "version": "<= 1.4.1-SNAPSHOT" } ] } ], "descriptions": [ { "lang": "en", "value": "Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Versions of Geyser prior to 1.4.2-SNAPSHOT allow anyone that can connect to the server to forge a LoginPacket with manipulated JWT token allowing impersonation as any user. Version 1.4.2-SNAPSHOT contains a patch for the issue. There are no known workarounds aside from upgrading." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-287", "description": "CWE-287: Improper Authentication", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-08-30T23:00:12.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6" }, { "tags": [ "x_refsource_MISC" ], "url": "https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY" } ], "source": { "advisory": "GHSA-h77f-xxx7-4858", "discovery": "UNKNOWN" }, "title": "User impersonation due to incorrect handling of the login JWT", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-39177", "STATE": "PUBLIC", "TITLE": "User impersonation due to incorrect handling of the login JWT" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Geyser", "version": { "version_data": [ { "version_value": "<= 1.4.1-SNAPSHOT" } ] } } ] }, "vendor_name": "GeyserMC" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Geyser is a bridge between Minecraft: Bedrock Edition and Minecraft: Java Edition. Versions of Geyser prior to 1.4.2-SNAPSHOT allow anyone that can connect to the server to forge a LoginPacket with manipulated JWT token allowing impersonation as any user. Version 1.4.2-SNAPSHOT contains a patch for the issue. There are no known workarounds aside from upgrading." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-287: Improper Authentication" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858", "refsource": "CONFIRM", "url": "https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858" }, { "name": "https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6", "refsource": "MISC", "url": "https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6" }, { "name": "https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY", "refsource": "MISC", "url": "https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY" } ] }, "source": { "advisory": "GHSA-h77f-xxx7-4858", "discovery": "UNKNOWN" } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:58:18.223Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://updates.playhive.com/weekend-maintenance-disclosure-2kJMaY" } ] } ] }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-39177", "datePublished": "2021-08-30T23:00:12.000Z", "dateReserved": "2021-08-16T00:00:00.000Z", "dateUpdated": "2024-08-04T01:58:18.223Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }