CVE-2020-15945

Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function.

CVSS v3 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://lua-users.org/lists/lua-l/2020-07/msg00123.html	Exploit Mailing List Third Party Advisory
https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-07-24 21:15

Updated : 2023-12-10 13:27

NVD link : CVE-2020-15945

Mitre link : CVE-2020-15945

CVE.ORG link : CVE-2020-15945

JSON object : View

Products Affected

lua

lua

CWE

NVD-CWE-Other

{"id": "CVE-2020-15945", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2020-07-24T21:15:34.553", "references": [{"url": "http://lua-users.org/lists/lua-l/2020-07/msg00123.html", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/lua/lua/commit/a2195644d89812e5b157ce7bac35543e06db05e3", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "Lua through 5.4.0 has a segmentation fault in changedline in ldebug.c (e.g., when called by luaG_traceexec) because it incorrectly expects that an oldpc value is always updated upon a return of the flow of control to a function."}, {"lang": "es", "value": "Lua versiones hasta 5.4.0, presenta un fallo de segmentaci\u00f3n en la funci\u00f3n changedline en el archivo ldebug.c (por ejemplo, cuando es llamado por luaG_traceexec) porque espera incorrectamente que un valor oldpc siempre es actualizado siempre al regresar el flujo de control a una funci\u00f3n"}], "lastModified": "2023-04-20T18:39:19.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:lua:lua:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D14749DE-D05F-41F1-895A-C01E60CCE8B0", "versionEndExcluding": "5.4.0", "versionStartIncluding": "5.3.1"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}