CVE-2021-23013
HIGHCVSS 7.5/10EPSS 0.86%
Last modified
CVE-2021-23013 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, the Traffic Management Microkernel (TMM) may stop responding when processing Stream Control Transmission Protocol (SCTP) traffic under certain conditions. This vulnerability affects TMM by way of a virtual server configured with an SCTP profile. EPSS estimates a 0.86% chance of exploitation in the next 30 days.
Description
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, the Traffic Management Microkernel (TMM) may stop responding when processing Stream Control Transmission Protocol (SCTP) traffic under certain conditions. This vulnerability affects TMM by way of a virtual server configured with an SCTP profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| F5 | Big-Ip Access Policy Manager | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Access Policy Manager | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Access Policy Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Access Policy Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Advanced Firewall Manager | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Advanced Firewall Manager | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Advanced Firewall Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Firewall Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Advanced Web Application Firewall | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Analytics | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Analytics | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Analytics | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Analytics | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Analytics | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Application Acceleration Manager | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Application Acceleration Manager | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Application Acceleration Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Acceleration Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Application Security Manager | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Application Security Manager | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Application Security Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Application Security Manager | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Ddos Hybrid Defender | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Domain Name System | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Domain Name System | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Domain Name System | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Domain Name System | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Domain Name System | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Fraud Protection Service | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Fraud Protection Service | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Fraud Protection Service | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Fraud Protection Service | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Fraud Protection Service | >= 16.0.0, < 16.0.1.1 |
| F5 | Big-Ip Global Traffic Manager | >= 12.1.0, < 12.1.5.3 |
| F5 | Big-Ip Global Traffic Manager | >= 13.1.0, < 13.1.4 |
| F5 | Big-Ip Global Traffic Manager | >= 14.1.0, < 14.1.4 |
| F5 | Big-Ip Global Traffic Manager | >= 15.1.0, < 15.1.3 |
| F5 | Big-Ip Global Traffic Manager | >= 16.0.0, < 16.0.1.1 |
Showing 50 of 70 affected configurations. See NVD for the full list.
References
- https://support.f5.com/csp/article/K04234247Not Applicable, Vendor Advisory
- https://support.f5.com/csp/article/K05300051Vendor Advisory
- https://support.f5.com/csp/article/K04234247Not Applicable, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23013?
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, the Traffic Management Microkernel (TMM) may stop responding when processing Stream Control Transmission Protocol (SCTP) traffic under certain conditions. This vulnerability affects TMM by way of a virtual server configured with an SCTP profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
How severe is CVE-2021-23013?
CVE-2021-23013 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23013?
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 2021
- CVE-2021-23008On version 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.…9.8
- CVE-2021-23009On BIG-IP version 16.0.x before 16.0.1.1 and 15.1.x before 1…7.5
- CVE-2021-2301Vulnerability in the MySQL Server product of Oracle MySQL (c…2.7
- CVE-2021-23010On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14…7.5
- CVE-2021-23011On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, 14…7.5
- CVE-2021-23012On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.…8.2
- CVE-2021-23014On versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.3, an…8.8
- CVE-2021-23015On BIG-IP 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, 13.1…7.2
- CVE-2021-23016On BIG-IP APM versions 15.1.x before 15.1.3, 14.1.x before 1…5.3
- CVE-2021-23017A security issue in nginx resolver was identified, which mig…7.7
- CVE-2021-23018Intra-cluster communication does not use TLS. The services w…7.4
- CVE-2021-23019The NGINX Controller 2.0.0 thru 2.9.0 and 3.x before 3.15.0 …7.8
Are you affected by CVE-2021-23013?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST