cve-2015-8370
Vulnerability from cvelistv5
Published
2015-12-16 00:00
Modified
2024-10-21 16:51
Summary
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.
References
cve@mitre.orghttp://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.htmlExploit
cve@mitre.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html
cve@mitre.orghttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html
cve@mitre.orghttp://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2015-2623.html
cve@mitre.orghttp://seclists.org/fulldisclosure/2015/Dec/69
cve@mitre.orghttp://www.debian.org/security/2015/dsa-3421
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2015/12/15/6
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/01/15/3
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch
cve@mitre.orghttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
cve@mitre.orghttp://www.securityfocus.com/archive/1/537115/100/0/threaded
cve@mitre.orghttp://www.securityfocus.com/bid/79358
cve@mitre.orghttp://www.securitytracker.com/id/1034422
cve@mitre.orghttp://www.ubuntu.com/usn/USN-2836-1
cve@mitre.orghttps://security.gentoo.org/glsa/201512-03
af854a3a-2127-422b-91ae-364da2661108http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.htmlExploit
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html
af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2015-2623.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2015/Dec/69
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2015/dsa-3421
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/12/15/6
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/01/15/3
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlPatch
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/537115/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/79358
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034422
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-2836-1
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201512-03
Impacted products
Vendor Product Version
Show details on NVD website


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    "dateReserved": "2015-11-27T00:00:00",
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      "lastModified": "2024-11-21T02:38:23.410",
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      "published": "2015-12-16T21:59:04.063",
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      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-264\"}]}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-191\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2015-8370\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2015-12-16T21:59:04.063\",\"lastModified\":\"2024-11-21T02:38:23.410\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"M\u00faltiple desbordamiento inferior de entero en Grub2 1.98 hasta la versi\u00f3n 2.02 permite a atacantes f\u00edsicamente pr\u00f3ximos eludir la autenticaci\u00f3n, obtener informaci\u00f3n sensible o causar una denegaci\u00f3n de servicio (corrupci\u00f3n de disco) a trav\u00e9s del car\u00e1cter backspace en la funci\u00f3n (1) grub_username_get en grub-core/normal/auth.c o (2) grub_password_get en lib/crypto.c, lo que desencadena un error de memoria \u0027Off-by-two\u0027 o \u0027Out of bounds 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\"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"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\": {\"id\": \"CVE-2015-8370\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-06T21:01:48.674436Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-191\", \"description\": \"CWE-191 Integer Underflow (Wrap or Wraparound)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-21T16:51:53.221Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"datePublic\": \"2015-12-10T00:00:00\", \"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\": 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\"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\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2024-01-16T00:06:19.101867\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2015-8370\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-21T16:51:57.721Z\", \"dateReserved\": \"2015-11-27T00:00:00\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2015-12-16T00:00:00\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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