CVE-2020-15889

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:lua:lua:5.4.0:*:*:*:*:*:*:*", "matchCriteriaId": "4066DFAE-B20D-44C9-BC34-694748ABE2CA", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members."}, {"lang": "es", "value": "Lua versi\u00f3n 5.4.0, presenta una lectura excesiva del b\u00fafer en la regi\u00f3n heap de la memoria de getobjname porque la funci\u00f3n youngcollection en el archivo lgc.c utiliza markold para un n\u00famero insuficiente de miembros de la lista"}], "id": "CVE-2020-15889", "lastModified": "2026-06-17T02:57:21.273", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-21T22:15:12.150", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://lua-users.org/lists/lua-l/2020-07/msg00078.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lua-users.org/lists/lua-l/2020-12/msg00157.html"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://lua-users.org/lists/lua-l/2020-07/msg00078.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lua-users.org/lists/lua-l/2020-12/msg00157.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "lua: heap-based buffer over-read in lgc.c", "id": "1860316", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1860316"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-122", "details": ["Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members."], "name": "CVE-2020-15889", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "lua", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "lua", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "lua", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "lua", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2020-07-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-15889\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-15889"], "statement": "The affected code was introduced via https://github.com/lua/lua/commit/f5f3df3bd17fb3489bbd26ab39fe1580a8dbf9c9 which is part of lua-5.4. Therefore versions of lua package shipped with Red Hat products is not affected by this flaw.", "threat_severity": "Important"}

{}