CVE-2021-3470

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{"affected": [{"affectedData": [{"product": "redis", "vendor": "n/a", "versions": [{"status": "affected", "version": "redis 5.0.10, redis 6.0.9, redis 6.2.0"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redislabs:redis:*:*:*:*:*:*:*:*", "matchCriteriaId": "5016C2D8-D4B2-414C-802F-7BDD3F7D3EA0", "versionEndExcluding": "5.0.10", "vulnerable": true}, {"criteria": "cpe:2.3:a:redislabs:redis:*:*:*:*:*:*:*:*", "matchCriteriaId": "0E9C8D2F-1A31-4590-8D0A-649F12BE0F12", "versionEndExcluding": "6.0.9", "versionStartIncluding": "6.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:redislabs:redis:6.2.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "29F3AA59-B998-425A-B8F3-D5D1E3EC6040", "vulnerable": true}, {"criteria": "cpe:2.3:a:redislabs:redis:6.2.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "5D60A9F7-0EC8-415C-ABB7-9A997C72EEE2", "vulnerable": true}, {"criteria": "cpe:2.3:a:redislabs:redis:6.2.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "1E0C28B7-B676-4F58-89F2-91163181D15B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc."}, {"lang": "es", "value": "Se encontr\u00f3 un problema de desbordamiento de pila en Redis en las versiones anteriores a 5.0.10, versiones anteriores a 6.0.9 y versiones anteriores a 6.2.0, cuando se usaba un asignador de pila que no fuera jemalloc o malloc de glibc, conllevando a un posible bloqueo del proceso o de escritura fuera de l\u00edmites. Efectivamente, este fallo no afecta a la gran mayor\u00eda de usuarios que usan jemalloc o glibc malloc."}], "id": "CVE-2021-3470", "lastModified": "2026-06-17T04:05:09.757", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-31T14:15:20.937", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1943623"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1943623"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "redis: potential heap overflow when using a heap allocator other than jemalloc or glibc's malloc", "id": "1943623", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1943623"}, "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": "draft"}, "cwe": "CWE-119", "details": ["A heap overflow issue was found in Redis in versions before 5.0.10, before 6.0.9 and before 6.2.0 when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc malloc.", "A heap overflow issue was found in Redis when using a heap allocator other than jemalloc or glibc's malloc, leading to potential out of bound write or process crash. Effectively this flaw does not affect the vast majority of users, who use jemalloc or glibc."], "name": "CVE-2021-3470", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "redisgraph-tls", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "search-api", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform", "fix_state": "Not affected", "package_name": "redis", "product_name": "Red Hat Ansible Automation Platform 1.2"}, {"cpe": "cpe:/a:redhat:ansible_tower:3", "fix_state": "Not affected", "package_name": "redis", "product_name": "Red Hat Ansible Tower 3"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "redis:5/redis", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "redis:6/redis", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "redis", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Will not fix", "package_name": "redis", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Will not fix", "package_name": "redis", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "rh-redis5-redis", "product_name": "Red Hat Software Collections"}], "public_date": "2020-10-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3470\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3470"], "statement": "The following products are not affected by this flaw because they use `jemalloc` as default heap allocator:\n* Red Hat Enterprise Linux 8\n* Red Hat Software Collections\n* Red Hat Advanced Cluster Management for Kubernetes\nIn Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP redis package.", "threat_severity": "Low"}

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