ghsa-2r59-6pxx-3wqv
Vulnerability from github
Published
2022-05-13 01:25
Modified
2022-05-13 01:25
Severity ?
5.9 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Details

procps-ng, procps is vulnerable to a process hiding through race condition. Since the kernel's proc_pid_readdir() returns PID entries in ascending numeric order, a process occupying a high PID can use inotify events to determine when the process list is being scanned, and fork/exec to obtain a lower PID, thus avoiding enumeration. An unprivileged attacker can hide a process from procps-ng's utilities by exploiting a race condition in reading /proc/PID entries. This vulnerability affects procps and procps-ng up to version 3.3.15, newer versions might be affected also.

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{
  "affected": [],
  "aliases": [
    "CVE-2018-1121"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-06-13T20:29:00Z",
    "severity": "MODERATE"
  },
  "details": "procps-ng, procps is vulnerable to a process hiding through race condition. Since the kernel\u0027s proc_pid_readdir() returns PID entries in ascending numeric order, a process occupying a high PID can use inotify events to determine when the process list is being scanned, and fork/exec to obtain a lower PID, thus avoiding enumeration. An unprivileged attacker can hide a process from procps-ng\u0027s utilities by exploiting a race condition in reading /proc/PID entries. This vulnerability affects procps and procps-ng up to version 3.3.15, newer versions might be affected also.",
  "id": "GHSA-2r59-6pxx-3wqv",
  "modified": "2022-05-13T01:25:29Z",
  "published": "2022-05-13T01:25:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1121"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/44806"
    },
    {
      "type": "WEB",
      "url": "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/oss-sec/2018/q2/122"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/104214"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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