It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. If an attacker could cause such an aggregation to occur, they could maliciously crash MongoDB in a DoS attack. This vulnerability affects MongoDB Server v4.4 versions prior to and including 4.4.28, MongoDB Server v5.0 versions prior to 5.0.4 and MongoDB Server v4.2 versions prior to 4.2.16.
Workaround: >= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash.
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This vulnerability affects MongoDB Server v4.4 versions prior to and including 4.4.28, MongoDB Server v5.0 versions prior to 5.0.4 and MongoDB Server v4.2 versions prior to 4.2.16.\n\nWorkaround: >= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-121", "description": "CWE-121 Stack-based Buffer Overflow", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb", "shortName": "mongodb", "dateUpdated": "2024-02-23T16:04:43.143Z" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://jira.mongodb.org/browse/SERVER-58203" }, { "tags": [ "x_refsource_MISC" ], "url": "https://jira.mongodb.org/browse/SERVER-59299" }, { "tags": [ "x_refsource_MISC" ], "url": "https://jira.mongodb.org/browse/SERVER-60218" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://security.netapp.com/advisory/ntap-20220609-0005/" } ], "source": { "discovery": "EXTERNAL" }, "title": "Large aggregation pipelines with a specific stage can crash mongod under default configuration", "workarounds": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": ">= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash." } ], "value": ">= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash." } ], "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "cna@mongodb.com", "DATE_PUBLIC": "2022-04-12T20:00:00.000Z", "ID": "CVE-2021-32040", "STATE": "PUBLIC", "TITLE": "Large aggregation pipelines with a specific stage can crash mongod under default configuration" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "MongoDB Server", "version": { "version_data": [ { "version_affected": "<", "version_name": "5.0", "version_value": "5.0.4" }, { "version_affected": "<", "version_name": "4.4", "version_value": "4.4.11" }, { "version_affected": "<", "version_name": "4.2", "version_value": "4.2.16" } ] } } ] }, "vendor_name": "MongoDB Inc." } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. 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