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.
Exploits (1)
References (5)
Core 5
Core References
Exploit, Third Party Advisory, VDB Entry exploit
x_refsource_exploit-db
https://www.exploit-db.com/exploits/44806/
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/104214
Exploit, Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://seclists.org/oss-sec/2018/q2/122
Exploit, Third Party Advisory x_refsource_misc
https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt
Scores
CVSS v3
3.9
EPSS
0.0199
EPSS Percentile
83.7%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
Details
CWE
CWE-367
CWE-362
Status
published
Products (1)
procps_project/procps
< 3.3.15
Published
Jun 13, 2018
Tracked Since
Feb 18, 2026