CVE-2020-16166
LOWCVSS 3.7/10EPSS 5.23%
Last modified
CVE-2020-16166 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.. EPSS estimates a 5.23% chance of exploitation in the next 30 days.
Description
The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 5.7.11 |
| Opensuse | Leap | 15.1 |
| Opensuse | Leap | 15.2 |
| Fedoraproject | Fedora | 31 |
| Fedoraproject | Fedora | 32 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 20.04 |
| Netapp | Active Iq Unified Manager | >= 9.5 |
| Netapp | Cloud Volumes Ontap Mediator | All versions |
| Netapp | E-Series Santricity Os Controller | >= 11.0.0, <= 11.60.3 |
| Netapp | Hci Bootstrap Os | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Netapp | Steelstore Cloud Integrated Storage | All versions |
| Netapp | Storagegrid | <= 9.0.4 |
| Netapp | H410c Firmware | All versions |
| Oracle | Sd-Wan Edge | 8.2 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.htmlMailing List, Third Party Advisory
- https://arxiv.org/pdf/2012.07432.pdfTechnical Description, Third Party Advisory
- https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200814-0004/Third Party Advisory
- https://usn.ubuntu.com/4525-1/Third Party Advisory
- https://usn.ubuntu.com/4526-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.htmlMailing List, Third Party Advisory
- https://arxiv.org/pdf/2012.07432.pdfTechnical Description, Third Party Advisory
- https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200814-0004/Third Party Advisory
- https://usn.ubuntu.com/4525-1/Third Party Advisory
- https://usn.ubuntu.com/4526-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-16166?
The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.
How severe is CVE-2020-16166?
CVE-2020-16166 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 5.23% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16166?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-16166?
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Scan your code nowSource: NVD / NIST