CVE-2024-38433 Nuvoton - CWE-305: Authentication Bypass by Primary Weakness
Attackers with SPI-Flash write access can modify u-boot headers to bypass authentication and execute arbitrary code on Nuvoton BMCs.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-38433?
CVE-2024-38433 is a medium-severity authentication bypass vulnerability in Nuvoton NPCM7xx (Poleg) BootBlock, published on 11 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Nuvoton - CWE-305: Authentication Bypass by Primary Weakness
An attacker with write access to the SPI-Flash on an NPCM7xx BMC subsystem that uses the Nuvoton BootBlock
reference code can modify the u-boot image header on flash parsed by the BootBlock which could lead to arbitrary code
execution.
Which versions are affected by CVE-2024-38433?
It affects 4 products.
Products include Nuvoton Npcm705r Firmware, Nuvoton Npcm710r Firmware, Nuvoton Npcm730r Firmware, Nuvoton Npcm750r Firmware.
How do I fix CVE-2024-38433?
No fix has been published for CVE-2024-38433 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-2024-38433 being exploited?
There is no known exploitation of CVE-2024-38433 in the wild and no public exploit code.
Sources
Also known as GHSA-jx2p-c252-qcmr.