CVE-2020-27727
MEDIUMCVSS 4.9/10EPSS 0.84%
Last modified
CVE-2020-27727 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. On BIG-IP version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.4, when an authenticated administrative user installs RPMs using the iAppsLX REST installer, the BIG-IP system does not sufficiently validate user input, allowing the user read access to the filesystem.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.
Description
On BIG-IP version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.4, when an authenticated administrative user installs RPMs using the iAppsLX REST installer, the BIG-IP system does not sufficiently validate user input, allowing the user read access to the filesystem.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Access Policy Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Access Policy Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Analytics | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Analytics | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Analytics | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Application Security Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Application Security Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Domain Name System | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Domain Name System | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Domain Name System | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Fraud Protection Service | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Fraud Protection Service | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Fraud Protection Service | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Global Traffic Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Global Traffic Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Global Traffic Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Link Controller | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Link Controller | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Link Controller | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Link Controller | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Local Traffic Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Local Traffic Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Local Traffic Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 13.1.0, < 13.1.3.5 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, < 14.1.3.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 15.0.0, < 15.1.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 16.0.0, < 16.0.1.1 |
References
- https://support.f5.com/csp/article/K50343630Vendor Advisory
- https://support.f5.com/csp/article/K50343630Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-27727?
On BIG-IP version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.4, when an authenticated administrative user installs RPMs using the iAppsLX REST installer, the BIG-IP system does not sufficiently validate user input, allowing the user read access to the filesystem.
How severe is CVE-2020-27727?
CVE-2020-27727 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27727?
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.
Related CVEs from 2020
- CVE-2020-27721In versions 16.0.0-16.0.0.1, 15.1.0-15.1.1, 14.1.0-14.1.3, 1…7.5
- CVE-2020-27722In BIG-IP APM versions 15.0.0-15.0.1.3, 14.1.0-14.1.3, and 1…6.5
- CVE-2020-27723In versions 14.1.0-14.1.3 and 13.1.0-13.1.3.4, a BIG-IP APM …7.5
- CVE-2020-27724In BIG-IP APM versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.4, 15.…6.5
- CVE-2020-27725In version 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.4, …4.3
- CVE-2020-27726In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3,…6.1
- CVE-2020-27728On BIG-IP ASM & Advanced WAF versions 16.0.0-16.0.0.1, 15.1.…7.5
- CVE-2020-27729In versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3,…6.1
- CVE-2020-2773Vulnerability in the Java SE, Java SE Embedded product of Or…3.7
- CVE-2020-27730In versions 3.0.0-3.9.0, 2.0.0-2.9.0, and 1.0.1, the NGINX C…9.8
- CVE-2020-27731Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2020-27732Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
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