CVE-2015-8370 (GCVE-0-2015-8370)

Vulnerability from cvelistv5 – Published: 2015-12-16 00:00 – Updated: 2024-10-21 16:51
VLAI
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.
Severity
7.4 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-06 21:01 UTC
CWE
  • n/a
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2325 records in the last 180 days details
References
Date Public
2015-12-10 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T08:13:32.834Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
          },
          {
            "name": "openSUSE-SU-2015:2392",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
          },
          {
            "name": "openSUSE-SU-2016:0036",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
          },
          {
            "name": "79358",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/79358"
          },
          {
            "name": "openSUSE-SU-2015:2375",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
          },
          {
            "name": "1034422",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1034422"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
          },
          {
            "name": "SUSE-SU-2015:2387",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
          },
          {
            "name": "SUSE-SU-2015:2386",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
          },
          {
            "name": "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": "SUSE-SU-2015:2385",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
          },
          {
            "name": "20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
          },
          {
            "name": "GLSA-201512-03",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201512-03"
          },
          {
            "name": "FEDORA-2015-cebe5133e7",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
          },
          {
            "name": "USN-2836-1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://www.ubuntu.com/usn/USN-2836-1"
          },
          {
            "name": "FEDORA-2015-90c27b6e91",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
          },
          {
            "name": "RHSA-2015:2623",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
          },
          {
            "name": "SUSE-SU-2015:2399",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
          },
          {
            "name": "DSA-3421",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2015/dsa-3421"
          },
          {
            "name": "[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.4,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2015-8370",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-06T21:01:48.674436Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-191",
                "description": "CWE-191 Integer Underflow (Wrap or Wraparound)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-21T16:51:57.721Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2015-12-10T00:00:00.000Z",
      "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": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-16T00:06:19.101Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
        },
        {
          "name": "openSUSE-SU-2015:2392",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
        },
        {
          "name": "openSUSE-SU-2016:0036",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
        },
        {
          "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
        },
        {
          "name": "79358",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/79358"
        },
        {
          "name": "openSUSE-SU-2015:2375",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
        },
        {
          "name": "1034422",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1034422"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
        },
        {
          "name": "SUSE-SU-2015:2387",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
        },
        {
          "name": "SUSE-SU-2015:2386",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
          "name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
        },
        {
          "name": "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": "SUSE-SU-2015:2385",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
        },
        {
          "name": "20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
        },
        {
          "name": "GLSA-201512-03",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201512-03"
        },
        {
          "name": "FEDORA-2015-cebe5133e7",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
        },
        {
          "name": "USN-2836-1",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://www.ubuntu.com/usn/USN-2836-1"
        },
        {
          "name": "FEDORA-2015-90c27b6e91",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
        },
        {
          "name": "RHSA-2015:2623",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
        },
        {
          "name": "SUSE-SU-2015:2399",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
        },
        {
          "name": "DSA-3421",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://www.debian.org/security/2015/dsa-3421"
        },
        {
          "name": "[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2015-8370",
    "datePublished": "2015-12-16T00:00:00.000Z",
    "dateReserved": "2015-11-27T00:00:00.000Z",
    "dateUpdated": "2024-10-21T16:51:57.721Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2015-8370",
      "date": "2026-10-20",
      "epss": "0.01095",
      "percentile": "0.65064"
    },
    "microsoft_vex": {
      "current_release_date": "2020-08-18T00:00:00.000Z",
      "cve": "CVE-2015-8370",
      "id": "msrc_CVE-2015-8370",
      "initial_release_date": "2015-12-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "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 (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.",
      "url": "https://msrc.microsoft.com/csaf/vex/2015/msrc_cve-2015-8370.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:gnu:grub2:1.98:*:*:*:*:*:*:*",
                    "matchCriteriaId": "936B2F89-3A97-46A8-B776-CF605C192CA2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:gnu:grub2:1.99:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6FB62F6A-8B42-4186-99AF-2A07050EB19E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:gnu:grub2:2.00:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D3AB3BF3-95F2-43C6-8445-4B749135BE8E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:gnu:grub2:2.01:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F3C7F246-9B64-49C4-B358-C5A62C3A2458",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:gnu:grub2:2.02:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7AEB4A3C-A448-4C7D-8F08-57940E13BB6D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E79AB8DD-C907-4038-A931-1A5A4CFB6A5B",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "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 overwrite\u0027."
          }
        ],
        "id": "CVE-2015-8370",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 6.9,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.4,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.4,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ]
        },
        "published": "2015-12-16T21:59:04.063",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit"
            ],
            "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.debian.org/security/2015/dsa-3421"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/bid/79358"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securitytracker.com/id/1034422"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.ubuntu.com/usn/USN-2836-1"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.gentoo.org/glsa/201512-03"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit"
            ],
            "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2015/dsa-3421"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/archive/1/537115/100/0/threaded"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/79358"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id/1034422"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.ubuntu.com/usn/USN-2836-1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201512-03"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-264"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-191"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:28:38+00:00",
      "cve": "CVE-2015-8370",
      "id": "CVE-2015-8370",
      "initial_release_date": "2015-12-10T00:00:00+00:00",
      "product_status:fixed": "96",
      "product_status:known_not_affected": "21",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "grub2: buffer overflow when checking password entered during bootup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-8370.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-06T08:13:32.834Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
              },
              {
                "name": "openSUSE-SU-2015:2392",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
              },
              {
                "name": "openSUSE-SU-2016:0036",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
              },
              {
                "name": "79358",
                "tags": [
                  "vdb-entry",
                  "x_transferred"
                ],
                "url": "http://www.securityfocus.com/bid/79358"
              },
              {
                "name": "openSUSE-SU-2015:2375",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
              },
              {
                "name": "1034422",
                "tags": [
                  "vdb-entry",
                  "x_transferred"
                ],
                "url": "http://www.securitytracker.com/id/1034422"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
              },
              {
                "name": "SUSE-SU-2015:2387",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
              },
              {
                "name": "SUSE-SU-2015:2386",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
              },
              {
                "name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
              },
              {
                "name": "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": "SUSE-SU-2015:2385",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
              },
              {
                "name": "20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
              },
              {
                "name": "GLSA-201512-03",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://security.gentoo.org/glsa/201512-03"
              },
              {
                "name": "FEDORA-2015-cebe5133e7",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
              },
              {
                "name": "USN-2836-1",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://www.ubuntu.com/usn/USN-2836-1"
              },
              {
                "name": "FEDORA-2015-90c27b6e91",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
              },
              {
                "name": "RHSA-2015:2623",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
              },
              {
                "name": "SUSE-SU-2015:2399",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
              },
              {
                "name": "DSA-3421",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "http://www.debian.org/security/2015/dsa-3421"
              },
              {
                "name": "[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "HIGH",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.4,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2015-8370",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-03-06T21:01:48.674436Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-191",
                    "description": "CWE-191 Integer Underflow (Wrap or Wraparound)",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-10-21T16:51:53.221Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "n/a",
              "vendor": "n/a",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "datePublic": "2015-12-10T00:00:00.000Z",
          "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": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-01-16T00:06:19.101Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "url": "http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html"
            },
            {
              "name": "openSUSE-SU-2015:2392",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00043.html"
            },
            {
              "name": "openSUSE-SU-2016:0036",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00003.html"
            },
            {
              "url": "http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html"
            },
            {
              "name": "79358",
              "tags": [
                "vdb-entry"
              ],
              "url": "http://www.securityfocus.com/bid/79358"
            },
            {
              "name": "openSUSE-SU-2015:2375",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html"
            },
            {
              "name": "1034422",
              "tags": [
                "vdb-entry"
              ],
              "url": "http://www.securitytracker.com/id/1034422"
            },
            {
              "url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
            },
            {
              "name": "SUSE-SU-2015:2387",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00041.html"
            },
            {
              "name": "SUSE-SU-2015:2386",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html"
            },
            {
              "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
            },
            {
              "name": "[oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
              "tags": [
                "mailing-list"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2015/12/15/6"
            },
            {
              "name": "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": "SUSE-SU-2015:2385",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"
            },
            {
              "name": "20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]",
              "tags": [
                "mailing-list"
              ],
              "url": "http://seclists.org/fulldisclosure/2015/Dec/69"
            },
            {
              "name": "GLSA-201512-03",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://security.gentoo.org/glsa/201512-03"
            },
            {
              "name": "FEDORA-2015-cebe5133e7",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html"
            },
            {
              "name": "USN-2836-1",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://www.ubuntu.com/usn/USN-2836-1"
            },
            {
              "name": "FEDORA-2015-90c27b6e91",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html"
            },
            {
              "name": "RHSA-2015:2623",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://rhn.redhat.com/errata/RHSA-2015-2623.html"
            },
            {
              "name": "SUSE-SU-2015:2399",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00044.html"
            },
            {
              "name": "DSA-3421",
              "tags": [
                "vendor-advisory"
              ],
              "url": "http://www.debian.org/security/2015/dsa-3421"
            },
            {
              "name": "[oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot manager",
              "tags": [
                "mailing-list"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2024/01/15/3"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2015-8370",
        "datePublished": "2015-12-16T00:00:00.000Z",
        "dateReserved": "2015-11-27T00:00:00.000Z",
        "dateUpdated": "2024-10-21T16:51:57.721Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.