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.
Metrics
CVSS 3.0 5.9/10
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| [UNKNOWN] | procps-ng, procps | up to procps-ng 3.3.15 and newer |
References
- http://seclists.org/oss-sec/2018/q2/122Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/104214Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121Issue 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.txtExploit, Third Party Advisory
- http://seclists.org/oss-sec/2018/q2/122Exploit, Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/104214Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121Issue 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.txtExploit, Third Party Advisory
Timeline
- Published
- Jun 13, 2018
- Last modified
- Jun 17, 2026
- NVD status
- Modified