CVE-2018-1121
[UNKNOWN] procps-ng, procps
LOW 3.9
At a glance
- Source
- NVD
- EPSS
- EPSS 4.11 % · percentile 91 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition
- CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | LOW 3.9 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L | redhat |
| CVSS 3.0 | LOW 3.9 | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.0 | MEDIUM 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-11765
- GCVE · GCVE-0-2018-1121
CERT-FR advisories
- CERTFR-2026-AVI-0326 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0316 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:procps_project:procps:*:*:*:*:*:*:*:*≤ 3.3.15
Affected products
| Product | Versions |
|---|---|
| [UNKNOWN] · procps-ng, procps | affected up to procps-ng 3.3.15 and newer |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |