CVEvulnerability
CVE-2018-1121
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-06-13
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 3.9 LOW — CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-362, CWE-367
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.
Affected configurations
• procps project procps (<= 3.3.15)
Related
References
- http://seclists.org/oss-sec/2018/q2/122 Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/104214 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121 Issue Tracking, Third Party Advisory
- https://www.exploit-db.com/exploits/44806/ Exploit, Third Party Advisory, VDB Entry
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt Exploit, Third Party Advisory
- http://seclists.org/oss-sec/2018/q2/122 Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/104214 Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121 Issue Tracking, Third Party Advisory
- https://www.exploit-db.com/exploits/44806/ Exploit, Third Party Advisory, VDB Entry
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt Exploit, Third Party Advisory