CWE Code: 362
Vulnerability Type: privilege_escalation
CVSS Score: 4.3
CWE Name:  Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary: 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.
Access Authentication: NONE
Access Complexity: MEDIUM
Access Vector: NETWORK
Impact (C/I/A): NONE/PARTIAL/NONE
Published Date: 2018-06-13
Last Modified Date: 2019-10-09
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Please provide details about this vulnerability:  Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
user
CWE Code: 362
Vulnerability Type: privilege_escalation
CVSS Score: 4.3
CWE Name:  Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary: 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.
Access Authentication: NONE
Access Complexity: MEDIUM
Access Vector: NETWORK
Impact (C/I/A): NONE/PARTIAL/NONE
Published Date: 2018-06-13
Last Modified Date: 2019-10-09
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