CVE-2022-23822 Auth bypass in Zynq-7000 SoC FSBL
An attacker with physical access can bypass authentication in the Zynq-7000 FSBL to load malicious images, enabling further attacks like decryption oracle usage.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23822?
CVE-2022-23822 is a medium-severity authentication bypass vulnerability in AMD-Xilinx Zynq-7000 SoC FSBL, published on 27 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In this physical attack, an attacker may potentially exploit the Zynq-7000 SoC First Stage Boot Loader (FSBL) by bypassing authentication and loading a malicious image onto the device. This in turn may further allow the attacker to perform additional attacks such as such as using the device as a decryption oracle. An anticipated mitigation via a 2022.1 patch will resolve the issue.
Weakness: CWE-863
Which versions are affected by CVE-2022-23822?
It affects 2 products.
Products include Xilinx Zynq-7000 Firmware, Xilinx Zynq-7000s Firmware.
How do I fix CVE-2022-23822?
No fix has been published for CVE-2022-23822 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-23822 being exploited?
There is no known exploitation of CVE-2022-23822 in the wild and no public exploit code.
Other vulnerabilities in AMD-Xilinx Zynq-7000 SoC FSBL
Sources
Also known as GHSA-734j-8w33-h29h.