Vulnerability CVE-2018-1121: Information
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.
Severity: MEDIUM (5.9) Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| procps | sisyphus | 3.3.16-alt1 | 4.0.4-alt3 | ALT-PU-2019-3348-1 | 242616 | Fixed |
| procps | p10 | 3.3.16-alt1 | 3.3.17-alt7.g37f1060.p10.2 | ALT-PU-2019-3348-1 | 242616 | Fixed |
| procps | p9 | 3.3.16-alt1 | 3.3.17-alt7.g37f1060.p10.2 | ALT-PU-2019-3353-1 | 243270 | Fixed |
| procps | c10f1 | 3.3.16-alt1 | 3.3.17-alt6.g37f1060 | ALT-PU-2019-3348-1 | 242616 | Fixed |
| procps | c9f2 | 3.3.16-alt1 | 3.3.16-alt1 | ALT-PU-2019-3353-1 | 243270 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt |
|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121 |
|
| [oss-security] 20180517 Qualys Security Advisory - Procps-ng Audit Report |
|
| 44806 |
|
| 104214 |
|