CVE-2021-22996 Denial of service in BIG-IQ
An attacker can cause a denial of service in BIG-IQ high availability clusters by sending a specific message to a data collection device configured for auto failover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-22996?
CVE-2021-22996 is a high-severity denial of service vulnerability in F5 Big-Iq Centralized Management, published on 31 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
On all 7.x versions (fixed in 8.0.0), when set up for auto failover, a BIG-IQ Data Collection Device (DCD) cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service (DoS) and impact the stability of a BIG-IQ high availability (HA) cluster. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Which versions are affected by CVE-2021-22996?
It affects 1 product.
Products include F5 Big-Iq Centralized Management.
How do I fix CVE-2021-22996?
No fix has been published for CVE-2021-22996 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-22996 being exploited?
There is no known exploitation of CVE-2021-22996 in the wild and no public exploit code.
Other vulnerabilities in F5 Big-Iq Centralized Management
Sources
Also known as GHSA-65mv-m6g8-v775.