gsd-2019-11191
Vulnerability from gsd
Modified
2023-12-13 01:24
Details
** DISPUTED ** The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2019-11191", "description": "** DISPUTED ** The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported.", "id": "GSD-2019-11191", "references": [ "https://www.suse.com/security/cve/CVE-2019-11191.html", "https://ubuntu.com/security/CVE-2019-11191" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2019-11191" ], "details": "** DISPUTED ** The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported.", "id": "GSD-2019-11191", "modified": "2023-12-13T01:24:00.901940Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2019-11191", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "n/a", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "** DISPUTED ** The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://www.openwall.com/lists/oss-security/2019/04/03/4", "refsource": "MISC", "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4" }, { "name": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1", "refsource": "MISC", "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1" }, { "name": "107887", "refsource": "BID", "url": "http://www.securityfocus.com/bid/107887" }, { "name": "[oss-security] 20190418 Re: Linux kernel \u003c 4.8 local generic ASLR - another CVE-ID", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2019/04/18/5" }, { "name": "[oss-security] 20190522 Re: Linux kernel \u003c 4.8 local generic ASLR - another CVE-ID", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2019/05/22/7" }, { "name": "USN-4007-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4007-2/" }, { "name": "USN-4008-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4008-1/" }, { "name": "USN-4006-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4006-1/" }, { "name": "USN-4006-2", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4006-2/" }, { "name": "USN-4007-1", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4007-1/" }, { "name": "USN-4008-3", "refsource": "UBUNTU", "url": "https://usn.ubuntu.com/4008-3/" }, { "name": "openSUSE-SU-2019:1570", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html" } ] } }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3B7E7650-82C7-44BB-8433-AD8E9881249E", "versionEndIncluding": "5.0.7", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported" }, { "lang": "es", "value": "** EN DISPUTA ** En el kernel de Linux hasta de la versi\u00f3n 5.0.7, cuando CONFIG_IA32_AOUT est\u00e1 habilitado y ia32_aout est\u00e1 cargado, permite a los usuarios locales omitir ASLR en programas setuid a.out (si existe) porque install_exec_creds() es llamado demasiado tarde en load_aout_binary() en fs/binfmt_aout .c, y por lo tanto la comprobaci\u00f3n ptrace_may_access() tiene una condici\u00f3n de carrera cuando se lee /proc/pid/stat. NOTA: el mantenedor de software discute que se trate de una vulnerabilidad porque ASLR para un archivo ejecutable de formato nunca fue compatible." } ], "id": "CVE-2019-11191", "lastModified": "2024-04-11T01:03:32.080", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "LOW", "cvssData": { "accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0" }, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV30": [ { "cvssData": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 2.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.0" }, "exploitabilityScore": 1.0, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2019-04-12T00:29:00.310", "references": [ { "source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html" }, { "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://www.openwall.com/lists/oss-security/2019/04/18/5" }, { "source": "cve@mitre.org", "url": "http://www.openwall.com/lists/oss-security/2019/05/22/7" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/107887" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4006-1/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4006-2/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4007-1/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4007-2/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4008-1/" }, { "source": "cve@mitre.org", "url": "https://usn.ubuntu.com/4008-3/" }, { "source": "cve@mitre.org", "tags": [ "Mailing List", "Exploit", "Third Party Advisory" ], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4" }, { "source": "cve@mitre.org", "tags": [ "Mailing List", "Exploit", "Third Party Advisory" ], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-362" } ], "source": "nvd@nist.gov", "type": "Primary" } ] } } } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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