Vulnerability CVE-2018-1121


Published: 2018-06-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Procps-ng Multiple Vulnerabilities
Qualys Corporati...
31.05.2018

Type:

CWE-362

Vendor: Procps project
Product: Procps 
Version: 3.3.15;

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None

 References:
http://seclists.org/oss-sec/2018/q2/122
http://www.securityfocus.com/bid/104214
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121
https://www.exploit-db.com/exploits/44806/
https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt

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