Vulnerability 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Procps Project | Procps | <= 3.3.15 |
Related Weaknesses (CWE)
References
- http://seclists.org/oss-sec/2018/q2/122ExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/104214Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121Issue TrackingThird Party Advisory
- https://www.exploit-db.com/exploits/44806/ExploitThird Party AdvisoryVDB Entry
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txtExploitThird Party Advisory
- http://seclists.org/oss-sec/2018/q2/122ExploitMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/104214Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121Issue TrackingThird Party Advisory
- https://www.exploit-db.com/exploits/44806/ExploitThird Party AdvisoryVDB Entry
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txtExploitThird Party Advisory
FAQ
What is CVE-2018-1121?
CVE-2018-1121 is a vulnerability with a CVSS score of 3.9 (LOW). 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...
How severe is CVE-2018-1121?
CVE-2018-1121 has been rated LOW with a CVSS base score of 3.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-1121?
Check the references section above for vendor advisories and patch information. Affected products include: Procps Project Procps.