CVE-2021-44078

{"id": "CVE-2021-44078", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.4}]}, "published": "2021-12-26T05:15:07.270", "references": [{"url": "https://gist.github.com/jwang-a/cb4b6e9551457aa299066076b836a2cd", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/jwang-a/CTF/blob/master/MyChallenges/Pwn/Unicorns_Aisle/UnicornsAisle.pdf", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/unicorn-engine/unicorn/commit/c733bbada356b0373fa8aa72c044574bb855fd24", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/unicorn-engine/unicorn/compare/2.0.0-rc4...2.0.0-rc5", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.unicorn-engine.org/changelog/", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-697"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in split_region in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the virtual memory manager. The issue results from the faulty comparison of GVA and GPA while calling uc_mem_map_ptr to free part of a claimed memory block. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code on the host machine."}, {"lang": "es", "value": "Se ha detectado un problema en la funci\u00f3n split_region en el archivo uc.c en Unicorn Engine versiones anteriores a 2.0.0-rc5. Permite a atacantes locales escapar del sandbox. Un atacante debe obtener primero la capacidad de ejecutar c\u00f3digo dise\u00f1ado en el sandbox de destino para poder explotar esta vulnerabilidad. El fallo espec\u00edfico se presenta en el administrador de memoria virtual. El problema resulta de la comparaci\u00f3n defectuosa de GVA y GPA mientras es llamado a uc_mem_map_ptr para liberar parte de un bloque de memoria reclamado. Un atacante puede aprovechar esta vulnerabilidad para escapar del sandbox y ejecutar c\u00f3digo arbitrario en la m\u00e1quina anfitriona"}], "lastModified": "2022-01-07T18:29:48.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:unicorn-engine:unicorn_engine:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C41772E7-3BEF-495D-8CA8-02F494D9AF3F", "versionEndIncluding": "1.0.3"}, {"criteria": "cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54D5A177-A072-4A7F-9C0A-57545CC04FDD"}, {"criteria": "cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B3D6EED4-B4EE-4486-A0FA-6932A27179F9"}, {"criteria": "cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2401D8B7-59B6-4FEC-8E1C-4D61FC5861C6"}, {"criteria": "cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "564B499B-2038-4FBE-B503-1200E10D2DAC"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}