Vulnerability-Lookup

CNVD-2018-06598

Vulnerability from cnvd - Published: 2018-03-28

Title

util-linux权限提升漏洞

Description

util-linux是一套用在Linux系统中并包含了多种系统管理工具的软件包，它提供加载、卸载、格式化、分区和管理硬盘驱动器，打开tty端口并得到内核消息等工具。 util-linux 2.32-rc1之前版本中的bash-completion/umount存在安全漏洞。本地攻击者可通过在mountpoint名称中注入shell命令利用该漏洞获取权限。

Severity

高

Patch Name

util-linux权限提升漏洞的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55

Reference

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892179

Impacted products

Name
util-linux util-linux <2.32-rc1

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "103367"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-7738"
    }
  },
  "description": "util-linux\u662f\u4e00\u5957\u7528\u5728Linux\u7cfb\u7edf\u4e2d\u5e76\u5305\u542b\u4e86\u591a\u79cd\u7cfb\u7edf\u7ba1\u7406\u5de5\u5177\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u63d0\u4f9b\u52a0\u8f7d\u3001\u5378\u8f7d\u3001\u683c\u5f0f\u5316\u3001\u5206\u533a\u548c\u7ba1\u7406\u786c\u76d8\u9a71\u52a8\u5668\uff0c\u6253\u5f00tty\u7aef\u53e3\u5e76\u5f97\u5230\u5185\u6838\u6d88\u606f\u7b49\u5de5\u5177\u3002\r\n\r\nutil-linux 2.32-rc1\u4e4b\u524d\u7248\u672c\u4e2d\u7684bash-completion/umount\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728mountpoint\u540d\u79f0\u4e2d\u6ce8\u5165shell\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Bj\u00c3\u00b6rn Bosselmann",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-06598",
  "openTime": "2018-03-28",
  "patchDescription": "util-linux\u662f\u4e00\u5957\u7528\u5728Linux\u7cfb\u7edf\u4e2d\u5e76\u5305\u542b\u4e86\u591a\u79cd\u7cfb\u7edf\u7ba1\u7406\u5de5\u5177\u7684\u8f6f\u4ef6\u5305\uff0c\u5b83\u63d0\u4f9b\u52a0\u8f7d\u3001\u5378\u8f7d\u3001\u683c\u5f0f\u5316\u3001\u5206\u533a\u548c\u7ba1\u7406\u786c\u76d8\u9a71\u52a8\u5668\uff0c\u6253\u5f00tty\u7aef\u53e3\u5e76\u5f97\u5230\u5185\u6838\u6d88\u606f\u7b49\u5de5\u5177\u3002\r\n\r\nutil-linux 2.32-rc1\u4e4b\u524d\u7248\u672c\u4e2d\u7684bash-completion/umount\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728mountpoint\u540d\u79f0\u4e2d\u6ce8\u5165shell\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "util-linux\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "util-linux util-linux \u003c2.32-rc1"
  },
  "referenceLink": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892179",
  "serverity": "\u9ad8",
  "submitTime": "2018-03-07",
  "title": "util-linux\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2018-7738 (GCVE-0-2018-7738)

Vulnerability from cvelistv5 – Published: 2018-03-06 22:00 – Updated: 2024-12-13 13:09

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://github.com/karelzak/util-linux/issues/539	x_refsource_MISC
https://www.debian.org/security/2018/dsa-4134	vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/bid/103367	vdb-entryx_refsource_BID
https://bugs.debian.org/892179	x_refsource_MISC
https://github.com/karelzak/util-linux/commit/75f…	x_refsource_MISC
https://usn.ubuntu.com/4512-1/	vendor-advisoryx_refsource_UBUNTU
https://security.netapp.com/advisory/ntap-2024121…

Date Public

2018-03-06 00:00

Show details on NVD website

JSON

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": "2018-03-06T00:00:00.000Z",
      "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": "2020-09-25T17:06:19.000Z",
        "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": "2018-03-06T22:00:00.000Z",
    "dateReserved": "2018-03-06T00:00:00.000Z",
    "dateUpdated": "2024-12-13T13:09:22.233Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CNVD-2018-06598

CVE-2018-7738 (GCVE-0-2018-7738)

Tags

Sightings

Nomenclature

Related by attack behaviour