ghsa-7w4w-2hxm-8cc6
Vulnerability from github
Published
2022-05-24 16:44
Modified
2022-12-01 00:30
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-3901"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-667"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-04-22T16:29:00Z",
    "severity": "MODERATE"
  },
  "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": "GHSA-7w4w-2hxm-8cc6",
  "modified": "2022-12-01T00:30:42Z",
  "published": "2022-05-24T16:44:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-3901"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2020:1016"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2020:1070"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2020:2522"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2020:2851"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2019-3901"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1701245"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190517-0005"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/89937"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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