CVE-2016-9604
Vulnerability from cvelistv5
Published
2018-07-11 13:00
Modified
2024-08-06 02:59
Severity
4.4 (Medium) - cvssV3_0 - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Summary
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
References
SourceURLTags
secalert@redhat.comhttp://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.htmlThird Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/102135Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1842Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2077Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2669Third Party Advisory
secalert@redhat.comhttps://bugzilla.novell.com/show_bug.cgi?id=1035576Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2fPatch, Vendor Advisory
Impacted products
VendorProduct
kernelsecurity
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T02:59:03.056Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f"
          },
          {
            "name": "RHSA-2017:2669",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2669"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html"
          },
          {
            "name": "102135",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/102135"
          },
          {
            "name": "RHSA-2017:2077",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2077"
          },
          {
            "name": "RHSA-2017:1842",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:1842"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "security",
          "vendor": "kernel",
          "versions": [
            {
              "status": "affected",
              "version": "kernel 4.11-rc8"
            }
          ]
        }
      ],
      "datePublic": "2017-04-18T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as \u0027.dns_resolver\u0027 in RHEL-7 or \u0027.builtin_trusted_keys\u0027 upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-732",
              "description": "CWE-732",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-07-12T09:57:01",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f"
        },
        {
          "name": "RHSA-2017:2669",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2669"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html"
        },
        {
          "name": "102135",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/102135"
        },
        {
          "name": "RHSA-2017:2077",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2077"
        },
        {
          "name": "RHSA-2017:1842",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:1842"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2016-9604",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "security",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "kernel 4.11-rc8"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "kernel"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as \u0027.dns_resolver\u0027 in RHEL-7 or \u0027.builtin_trusted_keys\u0027 upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring."
            }
          ]
        },
        "impact": {
          "cvss": [
            [
              {
                "vectorString": "4.4/CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.0"
              }
            ],
            [
              {
                "vectorString": "1.2/AV:L/AC:H/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              }
            ]
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-732"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f",
              "refsource": "CONFIRM",
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f"
            },
            {
              "name": "RHSA-2017:2669",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2017:2669"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604"
            },
            {
              "name": "https://bugzilla.novell.com/show_bug.cgi?id=1035576",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576"
            },
            {
              "name": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html",
              "refsource": "CONFIRM",
              "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html"
            },
            {
              "name": "102135",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/102135"
            },
            {
              "name": "RHSA-2017:2077",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2017:2077"
            },
            {
              "name": "RHSA-2017:1842",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2017:1842"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2016-9604",
    "datePublished": "2018-07-11T13:00:00",
    "dateReserved": "2016-11-23T00:00:00",
    "dateUpdated": "2024-08-06T02:59:03.056Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2016-9604\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2018-07-11T13:29:00.207\",\"lastModified\":\"2023-11-07T02:37:15.323\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as \u0027.dns_resolver\u0027 in RHEL-7 or \u0027.builtin_trusted_keys\u0027 upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.\"},{\"lang\":\"es\",\"value\":\"Se ha descubierto en el kernel de Linux en versiones anteriores a la 4.11-rc8 que root puede obtener acceso directo a un keyring interno, como \\\".dns_resolver\\\" en RHEL-7 o el upstream \\\".builtin_trusted_keys\\\" uni\u00e9ndose a \u00e9l como su keyring de sesi\u00f3n. Esto permite que root omita la verificaci\u00f3n de firmas del m\u00f3dulo a\u00f1adiendo una nueva clave p\u00fablica de su propia elaboraci\u00f3n al keyring.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":0.8,\"impactScore\":3.6},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":0.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:P/A:N\",\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\",\"baseScore\":2.1},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-732\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"4.11\",\"matchCriteriaId\":\"BDB550B4-ED03-4369-B53F-4FF3A24ECB0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"45227BEA-300E-4694-8ADE-D0FA7C560C83\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"9F27DB1B-125C-416A-8DF1-80EE75E4F972\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"64F78CCF-F54B-4D1C-AFA6-DE4076C3A263\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A659506C-868E-4E87-B0D8-E901BC2E9BDC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"ACE2C8C3-F2AA-4A39-9D81-B0F8BB82B834\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"D67BFFD0-1A52-4F5D-98DB-D94B58FD8D30\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"7D996F38-22AC-4059-84FC-F7D69CE0CB9B\"}]}]}],\"references\":[{\"url\":\"http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/102135\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:1842\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2077\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2017:2669\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.novell.com/show_bug.cgi?id=1035576\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.