{"id":"CVE-2015-8370","state":"PUBLISHED","title":"Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (di","description":"Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an \"Off-by-two\" or \"Out of bounds overwrite\" memory error.","publishedAt":"2015-12-16T00:00:00.000Z","updatedAt":"2024-10-21T16:51:57.721Z","severity":{"score":7.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html","http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html","http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html","http://www.securityfocus.com/bid/79358","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html","http://www.securitytracker.com/id/1034422","http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html","http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html","http://www.openwall.com/lists/oss-security/2015/12/15/6","http://www.securityfocus.com/archive/1/537115/100/0/threaded","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html","http://seclists.org/fulldisclosure/2015/Dec/69","https://security.gentoo.org/glsa/201512-03","http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html","http://www.ubuntu.com/usn/USN-2836-1","http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html","http://rhn.redhat.com/errata/RHSA-2015-2623.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html","http://www.debian.org/security/2015/dsa-3421","http://www.openwall.com/lists/oss-security/2024/01/15/3"],"weaknesses":["CWE-191"],"ingestedAt":"2026-10-29T19:42:17.446Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2015/8xxx/CVE-2015-8370.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2015-8370","state":"PUBLISHED","datePublished":"2015-12-16T00:00:00.000Z","dateUpdated":"2024-10-21T16:51:57.721Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2015-11-27T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an \"Off-by-two\" or \"Out of bounds overwrite\" memory error."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html","name":"openSUSE-SU-2015:2392","tags":["vendor-advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html","name":"openSUSE-SU-2016:0036","tags":["vendor-advisory"]},{"url":"http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"},{"url":"http://www.securityfocus.com/bid/79358","name":"79358","tags":["vdb-entry"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html","name":"openSUSE-SU-2015:2375","tags":["vendor-advisory"]},{"url":"http://www.securitytracker.com/id/1034422","name":"1034422","tags":["vdb-entry"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html","name":"SUSE-SU-2015:2387","tags":["vendor-advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html","name":"SUSE-SU-2015:2386","tags":["vendor-advisory"]},{"url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"},{"url":"http://www.openwall.com/lists/oss-security/2015/12/15/6","name":"[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list"]},{"url":"http://www.securityfocus.com/archive/1/537115/100/0/threaded","name":"20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html","name":"SUSE-SU-2015:2385","tags":["vendor-advisory"]},{"url":"http://seclists.org/fulldisclosure/2015/Dec/69","name":"20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list"]},{"url":"https://security.gentoo.org/glsa/201512-03","name":"GLSA-201512-03","tags":["vendor-advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html","name":"FEDORA-2015-cebe5133e7","tags":["vendor-advisory"]},{"url":"http://www.ubuntu.com/usn/USN-2836-1","name":"USN-2836-1","tags":["vendor-advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html","name":"FEDORA-2015-90c27b6e91","tags":["vendor-advisory"]},{"url":"http://rhn.redhat.com/errata/RHSA-2015-2623.html","name":"RHSA-2015:2623","tags":["vendor-advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html","name":"SUSE-SU-2015:2399","tags":["vendor-advisory"]},{"url":"http://www.debian.org/security/2015/dsa-3421","name":"DSA-3421","tags":["vendor-advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2024/01/15/3","name":"[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager","tags":["mailing-list"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2024-01-16T00:06:19.101Z"},"datePublic":"2015-12-10T00:00:00.000Z"},"adp":[{"title":"CVE Program Container","references":[{"url":"http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html","tags":["x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html","name":"openSUSE-SU-2015:2392","tags":["vendor-advisory","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html","name":"openSUSE-SU-2016:0036","tags":["vendor-advisory","x_transferred"]},{"url":"http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html","tags":["x_transferred"]},{"url":"http://www.securityfocus.com/bid/79358","name":"79358","tags":["vdb-entry","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html","name":"openSUSE-SU-2015:2375","tags":["vendor-advisory","x_transferred"]},{"url":"http://www.securitytracker.com/id/1034422","name":"1034422","tags":["vdb-entry","x_transferred"]},{"url":"http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html","tags":["x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html","name":"SUSE-SU-2015:2387","tags":["vendor-advisory","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html","name":"SUSE-SU-2015:2386","tags":["vendor-advisory","x_transferred"]},{"url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html","tags":["x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2015/12/15/6","name":"[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/537115/100/0/threaded","name":"20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html","name":"SUSE-SU-2015:2385","tags":["vendor-advisory","x_transferred"]},{"url":"http://seclists.org/fulldisclosure/2015/Dec/69","name":"20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]","tags":["mailing-list","x_transferred"]},{"url":"https://security.gentoo.org/glsa/201512-03","name":"GLSA-201512-03","tags":["vendor-advisory","x_transferred"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html","name":"FEDORA-2015-cebe5133e7","tags":["vendor-advisory","x_transferred"]},{"url":"http://www.ubuntu.com/usn/USN-2836-1","name":"USN-2836-1","tags":["vendor-advisory","x_transferred"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html","name":"FEDORA-2015-90c27b6e91","tags":["vendor-advisory","x_transferred"]},{"url":"http://rhn.redhat.com/errata/RHSA-2015-2623.html","name":"RHSA-2015:2623","tags":["vendor-advisory","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html","name":"SUSE-SU-2015:2399","tags":["vendor-advisory","x_transferred"]},{"url":"http://www.debian.org/security/2015/dsa-3421","name":"DSA-3421","tags":["vendor-advisory","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2024/01/15/3","name":"[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager","tags":["mailing-list","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-06T08:13:32.834Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.4,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"HIGH","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-03-06T21:01:48.674436Z","id":"CVE-2015-8370","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-191","type":"CWE","lang":"en","description":"CWE-191 Integer Underflow (Wrap or Wraparound)"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-21T16:51:57.721Z"}}]}}}