cve-2018-7738
Vulnerability from cvelistv5
Published
2018-03-06 22:00
Modified
2024-12-13 13:09
Severity ?
Summary
In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.
References
cve@mitre.orghttp://www.securityfocus.com/bid/103367Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugs.debian.org/892179Patch, Third Party Advisory
cve@mitre.orghttps://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55Patch, Third Party Advisory
cve@mitre.orghttps://github.com/karelzak/util-linux/issues/539Issue Tracking, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4512-1/
cve@mitre.orghttps://www.debian.org/security/2018/dsa-4134Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/103367Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/892179Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/karelzak/util-linux/issues/539Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20241213-0002/
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4512-1/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4134Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-12-13T13:09:22.233Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/karelzak/util-linux/issues/539"
          },
          {
            "name": "DSA-4134",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2018/dsa-4134"
          },
          {
            "name": "103367",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/103367"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugs.debian.org/892179"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55"
          },
          {
            "name": "USN-4512-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4512-1/"
          },
          {
            "url": "https://security.netapp.com/advisory/ntap-20241213-0002/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2018-03-06T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-09-25T17:06:19",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/karelzak/util-linux/issues/539"
        },
        {
          "name": "DSA-4134",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2018/dsa-4134"
        },
        {
          "name": "103367",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/103367"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugs.debian.org/892179"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55"
        },
        {
          "name": "USN-4512-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4512-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-7738",
          "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": "In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/karelzak/util-linux/issues/539",
              "refsource": "MISC",
              "url": "https://github.com/karelzak/util-linux/issues/539"
            },
            {
              "name": "DSA-4134",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2018/dsa-4134"
            },
            {
              "name": "103367",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/103367"
            },
            {
              "name": "https://bugs.debian.org/892179",
              "refsource": "MISC",
              "url": "https://bugs.debian.org/892179"
            },
            {
              "name": "https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55",
              "refsource": "MISC",
              "url": "https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55"
            },
            {
              "name": "USN-4512-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4512-1/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-7738",
    "datePublished": "2018-03-06T22:00:00",
    "dateReserved": "2018-03-06T00:00:00",
    "dateUpdated": "2024-12-13T13:09:22.233Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2018-7738\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2018-03-07T02:29:03.533\",\"lastModified\":\"2024-12-13T14:15:19.380\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.\"},{\"lang\":\"es\",\"value\":\"En util-linux, en versiones anteriores a la 2.32-rc1, bash-completion/umount permite que usuarios locales obtengan privilegios embebiendo comandos shell en un nombre mountpoint, que se gestiona de manera incorrecta durante un comando umount (en Bash) ejecutado por otro usuario. Esto se demuestra iniciando sesi\u00f3n como root y escribiendo unmount, seguido por un car\u00e1cter de tabulador para autocompletar.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":7.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":3.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.31\",\"matchCriteriaId\":\"94A373E4-EB6F-4ECB-AE6A-42B6278FAA9A\"}]}]}],\"references\":[{\"url\":\"http://www.securityfocus.com/bid/103367\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://bugs.debian.org/892179\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/karelzak/util-linux/issues/539\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4512-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4134\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/103367\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://bugs.debian.org/892179\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/karelzak/util-linux/issues/539\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20241213-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/4512-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4134\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.