gsd-2019-3901
Vulnerability from gsd
Modified
2023-12-13 01:24
Details
A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
Aliases
Aliases
CVE-2019-3901


To clipboard 

{
  "GSD": {
    "alias": "CVE-2019-3901",
    "description": "A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.",
    "id": "GSD-2019-3901",
    "references": [
      "https://www.suse.com/security/cve/CVE-2019-3901.html",
      "https://access.redhat.com/errata/RHSA-2020:2851",
      "https://access.redhat.com/errata/RHSA-2020:2522",
      "https://access.redhat.com/errata/RHSA-2020:1070",
      "https://access.redhat.com/errata/RHSA-2020:1016",
      "https://linux.oracle.com/cve/CVE-2019-3901.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2019-3901"
      ],
      "details": "A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.",
      "id": "GSD-2019-3901",
      "modified": "2023-12-13T01:24:03.119527Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2019-3901",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "kernel",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "older then 4.8"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "The Linux Foundation"
            }
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          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.0"
          }
        ]
      },
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                "lang": "eng",
                "value": "CWE-667"
              }
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html",
            "refsource": "MISC",
            "url": "https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html"
          },
          {
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          },
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          },
          {
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            "refsource": "MISC",
            "url": "http://www.securityfocus.com/bid/89937"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
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          {
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            "cpe_match": [
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                "versionEndExcluding": "4.8",
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              }
            ],
            "operator": "OR"
          },
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          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionStartIncluding": "7.2",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*",
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                "cpe23Uri": "cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*",
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              {
                "cpe23Uri": "cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:*",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:netapp:active_iq_unified_manager_for_vmware_vsphere:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionStartIncluding": "9.5",
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              },
              {
                "cpe23Uri": "cpe:2.3:a:netapp:virtual_storage_console_for_vmware_vsphere:*:*:*:*:*:*:*:*",
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              {
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            ],
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          },
          {
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              {
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      },
      "cve": {
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          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2019-3901"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "lang": "en",
              "value": "A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
                {
                  "lang": "en",
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                }
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901",
              "refsource": "CONFIRM",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901"
            },
            {
              "name": "89937",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/89937"
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              ],
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 1.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-02-12T23:38Z",
      "publishedDate": "2019-04-22T16:29Z"
    }
  }
}


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