CVE-2018-1121

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.

CVSS v3.0

5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.0

3.9 LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

4.19% chance of exploitation in the next 30 days, 90th percentile

Published

2018-06-13

Updated

2024-08-05

Proof-of-concept exploits (2)

• http://seclists.org/oss-sec/2018/q2/122
• https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/44806

References

• CVE Record
• NVD entry

Related

• CVE-2018-11209
• CVE-2018-11218
• CVE-2018-11208
• CVE-2018-1122
• CVE-2018-11207
• CVE-2018-11220