gsd-2017-7518
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
Aliases
Aliases
CVE-2017-7518


To clipboard 

{
  "GSD": {
    "alias": "CVE-2017-7518",
    "description": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.",
    "id": "GSD-2017-7518",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-7518.html",
      "https://www.debian.org/security/2017/dsa-3981",
      "https://access.redhat.com/errata/RHSA-2018:0412",
      "https://access.redhat.com/errata/RHSA-2018:0395",
      "https://ubuntu.com/security/CVE-2017-7518",
      "https://advisories.mageia.org/CVE-2017-7518.html",
      "https://linux.oracle.com/cve/CVE-2017-7518.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-7518"
      ],
      "details": "A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.",
      "id": "GSD-2017-7518",
      "modified": "2023-12-13T01:21:06.459301Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "STATE": "PUBLIC"
      },
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            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Kernel:",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "4.12"
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              "vendor_name": "[UNKNOWN]"
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          }
        ]
      },
      "impact": {
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          },
          {
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          {
            "name": "99263",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/99263"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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      "cve": {
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          "ID": "CVE-2017-7518"
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            {
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            },
            {
              "name": "[oss-security] 20170623 CVE-2017-7518 Kernel: KVM: debug exception via syscall emulation",
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      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.6,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2019-10-09T23:29Z",
      "publishedDate": "2018-07-30T15:29Z"
    }
  }
}


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