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.
References
Link | Resource |
---|---|
https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt | Exploit Third Party Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121 | Issue Tracking Third Party Advisory |
http://seclists.org/oss-sec/2018/q2/122 | Exploit Mailing List Third Party Advisory |
https://www.exploit-db.com/exploits/44806/ | Exploit Third Party Advisory VDB Entry |
http://www.securityfocus.com/bid/104214 | Third Party Advisory VDB Entry |
Configurations
Information
Published : 2018-06-13 13:29
Updated : 2020-06-30 09:15
NVD link : CVE-2018-1121
Mitre link : CVE-2018-1121
JSON object : View
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Products Affected
procps_project
- procps