gsd-2018-1121
Vulnerability from gsd
Modified
2023-12-13 01:22
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.
Aliases
Aliases
CVE-2018-1121


To clipboard 

{
   GSD: {
      alias: "CVE-2018-1121",
      description: "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.",
      id: "GSD-2018-1121",
      references: [
         "https://www.suse.com/security/cve/CVE-2018-1121.html",
         "https://security.archlinux.org/CVE-2018-1121",
         "https://packetstormsecurity.com/files/cve/CVE-2018-1121",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2018-1121",
         ],
         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.",
         id: "GSD-2018-1121",
         modified: "2023-12-13T01:22:36.875090Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "secalert@redhat.com",
            ID: "CVE-2018-1121",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "procps-ng, procps",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "=",
                                       version_value: "up to procps-ng 3.3.15 and newer",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "[UNKNOWN]",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "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.",
               },
            ],
         },
         impact: {
            cvss: [
               {
                  attackComplexity: "LOW",
                  attackVector: "LOCAL",
                  availabilityImpact: "LOW",
                  baseScore: 3.9,
                  baseSeverity: "LOW",
                  confidentialityImpact: "NONE",
                  integrityImpact: "LOW",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "REQUIRED",
                  vectorString: "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L",
                  version: "3.0",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        cweId: "CWE-367",
                        lang: "eng",
                        value: "CWE-367",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "http://seclists.org/oss-sec/2018/q2/122",
                  refsource: "MISC",
                  url: "http://seclists.org/oss-sec/2018/q2/122",
               },
               {
                  name: "http://www.securityfocus.com/bid/104214",
                  refsource: "MISC",
                  url: "http://www.securityfocus.com/bid/104214",
               },
               {
                  name: "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121",
                  refsource: "MISC",
                  url: "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121",
               },
               {
                  name: "https://www.exploit-db.com/exploits/44806/",
                  refsource: "MISC",
                  url: "https://www.exploit-db.com/exploits/44806/",
               },
               {
                  name: "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt",
                  refsource: "MISC",
                  url: "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:procps_project:procps:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndIncluding: "3.3.15",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "secalert@redhat.com",
               ID: "CVE-2018-1121",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "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.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-362",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt",
                     refsource: "MISC",
                     tags: [
                        "Exploit",
                        "Third Party Advisory",
                     ],
                     url: "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt",
                  },
                  {
                     name: "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121",
                     refsource: "CONFIRM",
                     tags: [
                        "Issue Tracking",
                        "Third Party Advisory",
                     ],
                     url: "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121",
                  },
                  {
                     name: "[oss-security] 20180517 Qualys Security Advisory - Procps-ng Audit Report",
                     refsource: "MLIST",
                     tags: [
                        "Exploit",
                        "Mailing List",
                        "Third Party Advisory",
                     ],
                     url: "http://seclists.org/oss-sec/2018/q2/122",
                  },
                  {
                     name: "44806",
                     refsource: "EXPLOIT-DB",
                     tags: [
                        "Exploit",
                        "Third Party Advisory",
                        "VDB Entry",
                     ],
                     url: "https://www.exploit-db.com/exploits/44806/",
                  },
                  {
                     name: "104214",
                     refsource: "BID",
                     tags: [
                        "Third Party Advisory",
                        "VDB Entry",
                     ],
                     url: "http://www.securityfocus.com/bid/104214",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "MEDIUM",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "NONE",
                  baseScore: 4.3,
                  confidentialityImpact: "NONE",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:N/AC:M/Au:N/C:N/I:P/A:N",
                  version: "2.0",
               },
               exploitabilityScore: 8.6,
               impactScore: 2.9,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "HIGH",
                  attackVector: "NETWORK",
                  availabilityImpact: "NONE",
                  baseScore: 5.9,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  version: "3.0",
               },
               exploitabilityScore: 2.2,
               impactScore: 3.6,
            },
         },
         lastModifiedDate: "2020-06-30T16:15Z",
         publishedDate: "2018-06-13T20:29Z",
      },
   },
}


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