CVE-2021-22992
CriticalOn BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy…
Published Mar 31, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-22992 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Big-Ip Access Policy Manager (F5), Big-Ip Advanced Firewall Manager (F5), Big-Ip Advanced Web Application Firewall (F5) and 12 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 73% probability of exploitation in the next 30 days.
- Fixed versions are available, including Big-Ip Access Policy Manager 11.6.5.3, Big-Ip Advanced Firewall Manager 11.6.5.3, Big-Ip Advanced Web Application Firewall 11.6.5.3.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
73%
Higher than 99.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2021-22992 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may allow remote code execution (RCE), leading to complete system compromise. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Affected Products
15 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Big-Ip Access Policy ManagerF5 | See advisory | 11.6.5.3 |
| Big-Ip Advanced Firewall ManagerF5 | See advisory | 11.6.5.3 |
| Big-Ip Advanced Web Application FirewallF5 | See advisory | 11.6.5.3 |
| Big-Ip AnalyticsF5 | See advisory | 11.6.5.3 |
| Big-Ip Application Acceleration ManagerF5 | See advisory | 11.6.5.3 |
Patched Releases
Big-Ip Access Policy Manager
11.6.5.3
Big-Ip Advanced Firewall Manager
11.6.5.3
Big-Ip Advanced Web Application Firewall
11.6.5.3
Big-Ip Analytics
11.6.5.3
Big-Ip Application Acceleration Manager
11.6.5.3
Big-Ip Application Security Manager
11.6.5.3
Big-Ip Ddos Hybrid Defender
11.6.5.3
Big-Ip Domain Name System
11.6.5.3
Big-Ip Fraud Protection Service
11.6.5.3
Big-Ip Global Traffic Manager
11.6.5.3
Big-Ip Link Controller
11.6.5.3
Big-Ip Local Traffic Manager
11.6.5.3
Big-Ip Policy Enforcement Manager
11.6.5.3
SSL Orchestrator
11.6.5.3
Timeline
Publicly disclosed
Mar 31, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
References
FAQ
Common Questions.
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting i…
Affected: Big-Ip Access Policy Manager (F5); Big-Ip Advanced Firewall Manager (F5); Big-Ip Advanced Web Application Firewall (F5), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Big-Ip Access Policy Manager 11.6.5.3, Big-Ip Advanced Firewall Manager 11.6.5.3, Big-Ip Advanced Web Application Firewall 11.6.5.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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