VulnerabilityModified
CVE-2023-4818
PAX A920 device allows to downgrade bootloader due to a bug in its version check.
HIGH 7.6EPSS 0.66%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used. The attacker must have physical USB access to the device in order to exploit this vulnerability.
- CVSS 3.1
- 7.6 HIGHCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.66% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- paxtechnology/paydroid
- Source
- cvd@cert.pl
References
- https://blog.stmcyber.com/pax-pos-cves-2023/Exploit, Third Party Advisory
- https://cert.pl/en/posts/2024/01/CVE-2023-4818/Third Party Advisory
- https://cert.pl/posts/2024/01/CVE-2023-4818/Third Party Advisory
- https://ppn.paxengine.com/release/developmentPermissions Required
- https://blog.stmcyber.com/pax-pos-cves-2023/Exploit, Third Party Advisory
- https://cert.pl/en/posts/2024/01/CVE-2023-4818/Third Party Advisory
- https://cert.pl/posts/2024/01/CVE-2023-4818/Third Party Advisory
- https://ppn.paxengine.com/release/developmentPermissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.