CVE-2019-11191

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "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"}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2019-06-18T14:06:11.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4"}, {"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1"}, {"name": "107887", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/107887"}, {"name": "[oss-security] 20190418 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2019/04/18/5"}, {"name": "[oss-security] 20190522 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2019/05/22/7"}, {"name": "USN-4007-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4007-2/"}, {"name": "USN-4008-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4008-1/"}, {"name": "USN-4006-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4006-1/"}, {"name": "USN-4006-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4006-2/"}, {"name": "USN-4007-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4007-1/"}, {"name": "USN-4008-3", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "https://usn.ubuntu.com/4008-3/"}, {"name": "openSUSE-SU-2019:1570", "tags": ["vendor-advisory", "x_refsource_SUSE"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html"}], "tags": ["disputed"], "x_legacyV4Record": {"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 < 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 < 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"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T22:48:08.995Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1"}, {"name": "107887", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/107887"}, {"name": "[oss-security] 20190418 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2019/04/18/5"}, {"name": "[oss-security] 20190522 Re: Linux kernel < 4.8 local generic ASLR - another CVE-ID", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2019/05/22/7"}, {"name": "USN-4007-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4007-2/"}, {"name": "USN-4008-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4008-1/"}, {"name": "USN-4006-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4006-1/"}, {"name": "USN-4006-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4006-2/"}, {"name": "USN-4007-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4007-1/"}, {"name": "USN-4008-3", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "https://usn.ubuntu.com/4008-3/"}, {"name": "openSUSE-SU-2019:1570", "tags": ["vendor-advisory", "x_refsource_SUSE", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2019-11191", "datePublished": "2019-04-11T23:07:29.000Z", "dateReserved": "2019-04-11T00:00:00.000Z", "dateUpdated": "2024-08-04T22:48:08.995Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"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:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3B7E7650-82C7-44BB-8433-AD8E9881249E", "versionEndIncluding": "5.0.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [{"sourceIdentifier": "cve@mitre.org", "tags": ["disputed"]}], "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": "2026-06-17T02:12:30.543", "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": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2019/04/18/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2019/05/22/7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107887"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4006-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4006-2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4007-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4007-2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4008-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://usn.ubuntu.com/4008-3/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2019/04/03/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "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"}]}

{"bugzilla": {"description": "kernel: race condition in load_aout_binary() allows local users to bypass ASLR on setuid a.out programs", "id": "1700007", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1700007"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.5", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-362", "details": ["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", "The Linux kernel allows local users to bypass ASLR protections for setuid a.out programs when CONFIG_IA32_AOUT is enabled and ia32_aout module is loaded, because install_exec_creds() is called too late in the load_aout_binary() in fs/binfmt_aout.c. Due to this, the ptrace_may_access() check may have a race condition with install_exec_creds() when reading /proc/pid/stat file and reveal information on addresses of kernel structures, henceforth defeating the KASLR protection."], "name": "CVE-2019-11191", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2019-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-11191\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-11191"], "threat_severity": "Low"}

{}