CVE-2020-5883
HIGHCVSS 7.5/10EPSS 1.28%
Last modified
CVE-2020-5883 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.. EPSS estimates a 1.28% chance of exploitation in the next 30 days.
Description
On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Access Policy Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Access Policy Manager | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Webaccelerator | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Webaccelerator | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Webaccelerator | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Webaccelerator | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Application Security Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Application Security Manager | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Fraud Protection Service | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Fraud Protection Service | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Fraud Protection Service | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Edge Gateway | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Edge Gateway | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Edge Gateway | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Edge Gateway | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Link Controller | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Link Controller | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Link Controller | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Link Controller | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Local Traffic Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Local Traffic Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Local Traffic Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Local Traffic Manager | >= 15.0.0, <= 15.0.1.3 |
| F5 | Big-Ip Policy Enforcement Manager | >= 13.1.0, <= 13.1.3.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.0.0, <= 14.0.1 |
| F5 | Big-Ip Policy Enforcement Manager | >= 14.1.0, <= 14.1.2.3 |
| F5 | Big-Ip Policy Enforcement Manager | >= 15.0.0, <= 15.0.1.3 |
References
- https://support.f5.com/csp/article/K12234501Vendor Advisory
- https://support.f5.com/csp/article/K12234501Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-5883?
On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2.3, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, when a virtual server is configured with HTTP explicit proxy and has an attached HTTP_PROXY_REQUEST iRule, POST requests sent to the virtual server cause an xdata memory leak.
How severe is CVE-2020-5883?
CVE-2020-5883 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.
How do I fix CVE-2020-5883?
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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- CVE-2020-5885On versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.…9.1
- CVE-2020-5886On versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.…9.1
- CVE-2020-5887On versions 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.…9.1
- CVE-2020-5888On versions 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.…8.1
- CVE-2020-5889On versions 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.…5.4
Are you affected by CVE-2020-5883?
Run a free Strix scan to check your systems for this vulnerability.
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