CVE-2021-21419

{"containers": {"cna": {"affected": [{"product": "eventlet", "vendor": "eventlet", "versions": [{"status": "affected", "version": ">= 0.10, < 0.31.0"}]}], "descriptions": [{"lang": "en", "value": "Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "{\"CWE-400\":\"Uncontrolled Resource Consumption\"}", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-05-25T02:06:13.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2"}, {"name": "FEDORA-2021-9fde3d7ab1", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB/"}, {"name": "FEDORA-2021-d5915c247b", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L/"}], "source": {"advisory": "GHSA-9p9m-jm8w-94p2", "discovery": "UNKNOWN"}, "title": "Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21419", "STATE": "PUBLIC", "TITLE": "Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "eventlet", "version": {"version_data": [{"version_value": ">= 0.10, < 0.31.0"}]}}]}, "vendor_name": "eventlet"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "{\"CWE-400\":\"Uncontrolled Resource Consumption\"}"}]}]}, "references": {"reference_data": [{"name": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2", "refsource": "CONFIRM", "url": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2"}, {"name": "FEDORA-2021-9fde3d7ab1", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB/"}, {"name": "FEDORA-2021-d5915c247b", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L/"}]}, "source": {"advisory": "GHSA-9p9m-jm8w-94p2", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:16.080Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2"}, {"name": "FEDORA-2021-9fde3d7ab1", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB/"}, {"name": "FEDORA-2021-d5915c247b", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L/"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21419", "datePublished": "2021-05-07T14:30:12.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:16.080Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "eventlet", "vendor": "eventlet", "versions": [{"status": "affected", "version": ">= 0.10, < 0.31.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:eventlet:eventlet:*:*:*:*:*:*:*:*", "matchCriteriaId": "864C8788-0B93-48CE-BF2C-FC598D801748", "versionEndExcluding": "0.31.0", "versionStartIncluding": "0.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process."}, {"lang": "es", "value": "Eventlet es una biblioteca de redes concurrentes para Python.&#xa0;Un peer de websocket puede agotar la memoria en el lado de Eventlet mediante el env\u00edo de tramas de websocket muy grandes.&#xa0;Los peers maliciosos pueden agotar la memoria en el lado de Eventlet mediante el env\u00edo de tramas de datos altamente comprimido.&#xa0;Un parche en la versi\u00f3n 0.31.0 restringe la trama de websocket a l\u00edmites razonables.&#xa0;Como soluci\u00f3n alternativa, restringir el uso de la memoria por medio de los l\u00edmites del sistema operativo ayudar\u00eda contra el agotamiento general de la m\u00e1quina, pero no hay una soluci\u00f3n para proteger el proceso de Eventlet"}], "id": "CVE-2021-21419", "lastModified": "2026-06-17T03:35:32.337", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-05-07T15:15:07.407", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L/"}, {"source": "security-advisories@github.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2021:2437", "cpe": "cpe:/a:redhat:openshift:4.8::el8", "package": "python-eventlet-0:0.25.2-4.el8", "product_name": "Red Hat OpenShift Container Platform 4.8", "release_date": "2021-07-27T00:00:00Z"}, {"advisory": "RHSA-2021:5071", "cpe": "cpe:/a:redhat:openstack:16.1::el8", "package": "python-eventlet-0:0.25.2-5.el8ost.1", "product_name": "Red Hat OpenStack Platform 16.1", "release_date": "2021-12-09T00:00:00Z"}], "bugzilla": {"description": "python-eventlet: improper handling of highly compressed data and memory allocation with excessive size allows DoS", "id": "1958407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1958407"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-400", "details": ["Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process.", "A flaw was found in eventlet. If an unauthenticated user manages to send large websocket frames or highly compressed data frames that can lead to memory exhaustion. An attacker could use this flaw to cause a denial of service (DoS)."], "name": "CVE-2021-21419", "package_state": [{"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Out of support scope", "package_name": "python-eventlet", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Will not fix", "package_name": "python-eventlet", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:storage:3", "fix_state": "Affected", "package_name": "python-eventlet", "product_name": "Red Hat Storage 3"}], "public_date": "2021-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-21419\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-21419"], "statement": "* In OpenShift Container Platform 4, the python-eventlet package is only used in Ironic container images, used for Baremetal provisioning, and Kuryr SDN container images, used for deployments on OpenStack.\n* In Red Hat Gluster Storage 3, python-eventlet package was primarily shipped as a dependency of openstack-swift. However, Openstack Swift is no longer supported with the recent release of Red Hat Gluster Storage 3.5.\n* Because the flaw's impact is lower and Red Hat OpenStack Platform 13 will be retiring soon, no update will be provided at this time for the RHOSP13 python-eventlet package.", "threat_severity": "Moderate"}

{}