VDB
CVE-2018-1121
CVE-2018-1121
PUBLISHED
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.
EPSS 1.93% · 83.7th percentile
Risk Scores
EPSS Score
1.93%
83.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1037.38~22.04.1, 6.8.0-1035.36~22.04.1, 6.8.0-1033.34~22.04.1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-43.44~22.04.1, 5.19.0-50.50, 5.19.0-46.47~22.04.1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1030.30, 5.15.0-1029.29, 5.15.0-1018.18 |
| Ubuntu:Pro:18.04:LTS | linux-gcp-4.15 | 4.15.0-1086.98, 4.15.0-1154.171, 4.15.0-1141.157 |
| Ubuntu:Pro:20.04:LTS | linux-aws | 5.4.0-1083.90, 5.4.0-1034.35, 5.4.0-1030.31 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1005.5, 5.15.0-1015.15, 5.15.0-1088.89 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1009.9~22.04.1, *, * |
| Ubuntu:Pro:20.04:LTS | linux-azure-5.15 | 5.15.0-1056.64~20.04.1, 5.15.0-1052.60~20.04.1, 5.15.0-1051.59~20.04.1 |
| Ubuntu:25.10 | linux | 6.14.0-15.15, 6.17.0-12.12, 6.17.0-14.14 |
| Ubuntu:18.04:LTS | linux-oracle-5.3 | 5.3.0-1018.20~18.04.1, 0, * |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1038.39, 6.8.0-1039.40, 6.8.0-1040.41 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | 5.19.0-1019.21~22.04.1, *, * |
| Ubuntu:24.04:LTS | linux-oem-6.17 | 6.17.0-1011.11, 6.17.0-1010.10, 6.17.0-1009.9 |
| Ubuntu:18.04:LTS | linux-gcp-edge | 0, 5.0.0-1013.13~18.04.1, 5.0.0-1011.11~18.04.1 |
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-fips | 4.15.0-1083.92, 4.15.0-1084.93, 4.15.0-1085.94 |
| Ubuntu:Pro:20.04:LTS | linux-azure-fde-5.15 | 5.15.0-1052.60~20.04.1.1, 5.15.0-1033.40~20.04.1.1, 5.15.0-1034.41~20.04.1.2 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-realtime-6.14 | *, 0, 6.14.0-1017.17~24.04.1 |
| Ubuntu:Pro:Realtime:24.04:LTS | linux-realtime | 6.8.1-1013.14, 6.8.1-1015.16, 0 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1077.83, 5.15.0-1057.63, 5.15.0-1058.64 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1017.17~22.04.1.1, 6.2.0-1016.16~22.04.1.1, 6.2.0-1015.15~22.04.1.1 |
…and 218 more
Exploit Intelligence
- http://seclists.org/oss-sec/2018/q2/122 (nist-nvd)
- https://www.exploit-db.com/exploits/44806/ (nist-nvd)
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt (nist-nvd)
- Procps-ng - Multiple Vulnerabilities (0day-today)
- Procps-ng - Multiple Vulnerabilities (0day-today)
Timeline
- May 17, 2018 CVE Published
- May 30, 2018 PoC Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-1121 third-party-advisory
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt third-party-advisory
- http://seclists.org/oss-sec/2018/q2/122 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-1121 third-party-advisory