Vulnerability-Lookup

CNVD-2018-24545

Vulnerability from cnvd - Published: 2018-12-04

Title

Linux kernel KVM权限提升漏洞

Description

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。KVM是其中的一个基于内核的虚拟机。 Linux kernel中的KVM 4.10及之后版本存在安全漏洞，该漏洞源于程序未能检测CPL（当前执行任务或程序的特权级）。攻击者可利用该漏洞提升权限。

Severity

中

Patch Name

Linux kernel KVM权限提升漏洞的补丁

Patch Description

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。KVM是其中的一个基于内核的虚拟机。 Linux kernel中的KVM 4.10及之后版本存在安全漏洞，该漏洞源于程序未能检测CPL（当前执行任务或程序的特权级）。攻击者可利用该漏洞提升权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

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=3c9fa24ca7c9c47605672916491f79e8ccacb9e6

Reference

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6

Impacted products

Name
Linux Kernel >=4.10

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-10853",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10853"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KVM\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u57fa\u4e8e\u5185\u6838\u7684\u865a\u62df\u673a\u3002\n\nLinux kernel\u4e2d\u7684KVM 4.10\u53ca\u4e4b\u540e\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u68c0\u6d4bCPL\uff08\u5f53\u524d\u6267\u884c\u4efb\u52a1\u6216\u7a0b\u5e8f\u7684\u7279\u6743\u7ea7\uff09\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5:\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-24545",
  "openTime": "2018-12-04",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002KVM\u662f\u5176\u4e2d\u7684\u4e00\u4e2a\u57fa\u4e8e\u5185\u6838\u7684\u865a\u62df\u673a\u3002\r\n\r\nLinux kernel\u4e2d\u7684KVM 4.10\u53ca\u4e4b\u540e\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u68c0\u6d4bCPL\uff08\u5f53\u524d\u6267\u884c\u4efb\u52a1\u6216\u7a0b\u5e8f\u7684\u7279\u6743\u7ea7\uff09\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\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": "Linux kernel KVM\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003e=4.10"
  },
  "referenceLink": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6",
  "serverity": "\u4e2d",
  "submitTime": "2018-09-04",
  "title": "Linux kernel KVM\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}

CVE-2018-10853 (GCVE-0-2018-10853)

Vulnerability from cvelistv5 – Published: 2018-09-11 14:00 – Updated: 2024-08-05 07:46

Summary

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

Severity

7 (High)


                        
                          CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-250

Assigner

redhat redhat root

References

15 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://usn.ubuntu.com/3777-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3777-2/	vendor-advisoryx_refsource_UBUNTU
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_CONFIRM
https://www.openwall.com/lists/oss-security/2018/…	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:2043	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2029	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0036	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0103	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0179	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
Linux	kernel	Affected: 4.18

Date Public

2018-06-05 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T07:46:47.491Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853"
          },
          {
            "name": "USN-3777-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3777-1/"
          },
          {
            "name": "[debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74"
          },
          {
            "name": "[debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html"
          },
          {
            "name": "USN-3777-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3777-2/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2018/09/02/1"
          },
          {
            "name": "openSUSE-SU-2019:1407",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html"
          },
          {
            "name": "RHSA-2019:2043",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2043"
          },
          {
            "name": "RHSA-2019:2029",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2029"
          },
          {
            "name": "RHSA-2020:0036",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2020:0036"
          },
          {
            "name": "RHSA-2020:0103",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2020:0103"
          },
          {
            "name": "RHSA-2020:0179",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2020:0179"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            }
          ]
        }
      ],
      "datePublic": "2018-06-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-250",
              "description": "CWE-250",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-01-21T19:06:24.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853"
        },
        {
          "name": "USN-3777-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3777-1/"
        },
        {
          "name": "[debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74"
        },
        {
          "name": "[debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html"
        },
        {
          "name": "USN-3777-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3777-2/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.openwall.com/lists/oss-security/2018/09/02/1"
        },
        {
          "name": "openSUSE-SU-2019:1407",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html"
        },
        {
          "name": "RHSA-2019:2043",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2019:2043"
        },
        {
          "name": "RHSA-2019:2029",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2019:2029"
        },
        {
          "name": "RHSA-2020:0036",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2020:0036"
        },
        {
          "name": "RHSA-2020:0103",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2020:0103"
        },
        {
          "name": "RHSA-2020:0179",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2020:0179"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2018-10853",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "kernel",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "4.18"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Linux"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest."
            }
          ]
        },
        "impact": {
          "cvss": [
            [
              {
                "vectorString": "7/CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              }
            ]
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-250"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "[debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10853"
            },
            {
              "name": "USN-3777-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3777-1/"
            },
            {
              "name": "[debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html"
            },
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74",
              "refsource": "CONFIRM",
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74"
            },
            {
              "name": "[debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html"
            },
            {
              "name": "USN-3777-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3777-2/"
            },
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6",
              "refsource": "CONFIRM",
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c9fa24ca7c9c47605672916491f79e8ccacb9e6"
            },
            {
              "name": "https://www.openwall.com/lists/oss-security/2018/09/02/1",
              "refsource": "MISC",
              "url": "https://www.openwall.com/lists/oss-security/2018/09/02/1"
            },
            {
              "name": "openSUSE-SU-2019:1407",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html"
            },
            {
              "name": "RHSA-2019:2043",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:2043"
            },
            {
              "name": "RHSA-2019:2029",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:2029"
            },
            {
              "name": "RHSA-2020:0036",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2020:0036"
            },
            {
              "name": "RHSA-2020:0103",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2020:0103"
            },
            {
              "name": "RHSA-2020:0179",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2020:0179"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2018-10853",
    "datePublished": "2018-09-11T14:00:00.000Z",
    "dateReserved": "2018-05-09T00:00:00.000Z",
    "dateUpdated": "2024-08-05T07:46:47.491Z",
    "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.