CVE-2021-22275 Denial of service vulnerability on Automation Runtime webserver
An unauthenticated attacker can cause a denial of service on B&R Automation Runtime devices via a buffer overflow in the webserver.
- 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-2021-22275?
CVE-2021-22275 is a high-severity denial of service vulnerability in B&R Automation Automation Runtime webserver, published on 13 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Overflow vulnerability in B&R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.
Weakness: CWE-120
Which versions are affected by CVE-2021-22275?
It affects 1 product.
Products include Br-Automation Automation Runtime.
How do I fix CVE-2021-22275?
No fix has been published for CVE-2021-22275 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-2021-22275 being exploited?
There is no known exploitation of CVE-2021-22275 in the wild and no public exploit code.
Other vulnerabilities in B&R Automation Automation Runtime webserver
- CVE-2024-0323 FTP uses unsecure encryption mechanisms
- CVE-2019-19108 B&R Automation Runtime SNMP Authentication and Authorization Weakness
- CVE-2023-3242 Denial of service in B&R Automation Runtime
- CVE-2024-5800 Diffie-Hellman groups with insufficient strength used in SSL/TLS stack of B&R Automation Runtime
- CVE-2023-6028 SDM Web interface vulnerable to XSS
Sources
Also known as GHSA-r593-v4g4-3636.