Vulnerability-Lookup

CNVD-2017-37876

Vulnerability from cnvd - Published: 2017-12-22

Title

Linux kernel KEYS子系统密钥漏洞

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。KEYS subsystem是其中的一套密钥子系统。 Linux kernel 4.14.6之前的版本中的KEYS子系统存在密钥漏洞，该漏洞源于程序未能进程访问控制检测。本地攻击者可利用该漏洞将密钥添加到只有搜索权限的密钥环中。

Severity

中

Patch Name

Linux kernel KEYS子系统密钥漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b

Reference

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b

Impacted products

Name
Linux kernel <4.14.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-17807"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KEYS subsystem\u662f\u5176\u4e2d\u7684\u4e00\u5957\u5bc6\u94a5\u5b50\u7cfb\u7edf\u3002\r\n\r\nLinux kernel 4.14.6\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684KEYS\u5b50\u7cfb\u7edf\u5b58\u5728\u5bc6\u94a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u7a0b\u8bbf\u95ee\u63a7\u5236\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5bc6\u94a5\u6dfb\u52a0\u5230\u53ea\u6709\u641c\u7d22\u6743\u9650\u7684\u5bc6\u94a5\u73af\u4e2d\u3002",
  "discovererName": "Eric Biggers",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-37876",
  "openTime": "2017-12-22",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KEYS subsystem\u662f\u5176\u4e2d\u7684\u4e00\u5957\u5bc6\u94a5\u5b50\u7cfb\u7edf\u3002\r\n\r\nLinux kernel 4.14.6\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684KEYS\u5b50\u7cfb\u7edf\u5b58\u5728\u5bc6\u94a5\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u7a0b\u8bbf\u95ee\u63a7\u5236\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5bc6\u94a5\u6dfb\u52a0\u5230\u53ea\u6709\u641c\u7d22\u6743\u9650\u7684\u5bc6\u94a5\u73af\u4e2d\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": "Linux kernel KEYS\u5b50\u7cfb\u7edf\u5bc6\u94a5\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c4.14.6"
  },
  "referenceLink": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b",
  "serverity": "\u4e2d",
  "submitTime": "2017-12-22",
  "title": "Linux kernel KEYS\u5b50\u7cfb\u7edf\u5bc6\u94a5\u6f0f\u6d1e"
}

CVE-2017-17807 (GCVE-0-2017-17807)

Vulnerability from cvelistv5 – Published: 2017-12-20 23:00 – Updated: 2024-08-05 20:59

Summary

The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

15 references

URL	Tags
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/102301	vdb-entryx_refsource_BID
https://usn.ubuntu.com/3617-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3619-2/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4082	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3617-3/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3632-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3620-2/	vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/4dca6ea1…	x_refsource_CONFIRM
https://www.debian.org/security/2017/dsa-4073	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3617-2/	vendor-advisoryx_refsource_UBUNTU
https://www.kernel.org/pub/linux/kernel/v4.x/Chan…	x_refsource_CONFIRM
https://usn.ubuntu.com/3620-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3619-1/	vendor-advisoryx_refsource_UBUNTU

Date Public

2017-12-20 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T20:59:17.864Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b"
          },
          {
            "name": "102301",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/102301"
          },
          {
            "name": "USN-3617-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3617-1/"
          },
          {
            "name": "USN-3619-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3619-2/"
          },
          {
            "name": "DSA-4082",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2018/dsa-4082"
          },
          {
            "name": "USN-3617-3",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3617-3/"
          },
          {
            "name": "[debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
          },
          {
            "name": "USN-3632-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3632-1/"
          },
          {
            "name": "USN-3620-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3620-2/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b"
          },
          {
            "name": "DSA-4073",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2017/dsa-4073"
          },
          {
            "name": "USN-3617-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3617-2/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6"
          },
          {
            "name": "USN-3620-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3620-1/"
          },
          {
            "name": "USN-3619-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3619-1/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2017-12-20T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task\u0027s \"default request-key keyring\" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-04-24T09:57:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b"
        },
        {
          "name": "102301",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/102301"
        },
        {
          "name": "USN-3617-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3617-1/"
        },
        {
          "name": "USN-3619-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3619-2/"
        },
        {
          "name": "DSA-4082",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2018/dsa-4082"
        },
        {
          "name": "USN-3617-3",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3617-3/"
        },
        {
          "name": "[debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
        },
        {
          "name": "USN-3632-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3632-1/"
        },
        {
          "name": "USN-3620-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3620-2/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b"
        },
        {
          "name": "DSA-4073",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2017/dsa-4073"
        },
        {
          "name": "USN-3617-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3617-2/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6"
        },
        {
          "name": "USN-3620-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3620-1/"
        },
        {
          "name": "USN-3619-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3619-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2017-17807",
          "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": "The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task\u0027s \"default request-key keyring\" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b",
              "refsource": "CONFIRM",
              "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b"
            },
            {
              "name": "102301",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/102301"
            },
            {
              "name": "USN-3617-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3617-1/"
            },
            {
              "name": "USN-3619-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3619-2/"
            },
            {
              "name": "DSA-4082",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2018/dsa-4082"
            },
            {
              "name": "USN-3617-3",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3617-3/"
            },
            {
              "name": "[debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html"
            },
            {
              "name": "USN-3632-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3632-1/"
            },
            {
              "name": "USN-3620-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3620-2/"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b",
              "refsource": "CONFIRM",
              "url": "https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b"
            },
            {
              "name": "DSA-4073",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2017/dsa-4073"
            },
            {
              "name": "USN-3617-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3617-2/"
            },
            {
              "name": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6",
              "refsource": "CONFIRM",
              "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6"
            },
            {
              "name": "USN-3620-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3620-1/"
            },
            {
              "name": "USN-3619-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3619-1/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2017-17807",
    "datePublished": "2017-12-20T23:00:00.000Z",
    "dateReserved": "2017-12-20T00:00:00.000Z",
    "dateUpdated": "2024-08-05T20:59:17.864Z",
    "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.

Detection rules are retrieved from Rulezet.

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.