Auth bypass in Amd-Xilinx Zynq-7000 Soc Fsbl
CVE-2022-23822
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (16.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- support.xilinx.com/s/article/76974 (Vendor Advisory)
- github.com/Xilinx/embeddedsw/tree/master/lib/sw_apps/zynq_fsbl (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-23822?
- CVE-2022-23822 is a medium-severity vulnerability in Amd-Xilinx Zynq-7000 Soc Fsbl, classified under Incorrect Authorization. CVSS score: 6.8/10. Published 2022-04-27.
- How severe is CVE-2022-23822?
- Medium severity. CVSS v3 base score is 6.8 out of 10.