CVE-2011-1271

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://stackoverflow.com/questions/2135509/bug-only-occurring-when-compile-optimization-enabled/", "name": "http://stackoverflow.com/questions/2135509/bug-only-occurring-when-compile-optimization-enabled/", "tags": ["Exploit"], "refsource": "MISC"}, {"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12686", "name": "oval:org.mitre.oval:def:12686", "tags": [], "refsource": "OVAL"}, {"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-044", "name": "MS11-044", "tags": [], "refsource": "MS"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The JIT compiler in Microsoft .NET Framework 3.5 Gold and SP1, 3.5.1, and 4.0, when IsJITOptimizerDisabled is false, does not properly handle expressions related to null strings, which allows context-dependent attackers to bypass intended access restrictions, and consequently execute arbitrary code, in opportunistic circumstances by leveraging a crafted application, as demonstrated by (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka \".NET Framework JIT Optimization Vulnerability.\""}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-264"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2011-1271", "ASSIGNER": "secure@microsoft.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.1, "accessVector": "NETWORK", "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "HIGH", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 4.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": 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