CVE-2024-1633 FIP Header Integer Overflow
An integer overflow in the Renesas R-Car bootloader allows attackers to bypass secure boot memory restrictions and write data out of bounds.
- 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-2024-1633?
CVE-2024-1633 is a low-severity vulnerability in Renesas rcar_gen3_v2.5, published on 19 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
During the secure boot, bl2 (the second stage of the bootloader) loops over images defined in the table “bl2_mem_params_descs”. For each image, the bl2 reads the image length and destination from the image’s certificate. Because of the way of reading from the image, which base on 32-bit unsigned integer value, it can result to an integer overflow. An attacker can bypass memory range restriction and write data out of buffer bounds, which could result in bypass of secure boot.
Affected git version from c2f286820471ed276c57e603762bd831873e5a17 until (not
Weakness: CWE-190
Which versions are affected by CVE-2024-1633?
It affects 1 product.
Products include Renesas Arm-Trusted-Firmware.
How do I fix CVE-2024-1633?
No fix has been published for CVE-2024-1633 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-1633 being exploited?
There is no known exploitation of CVE-2024-1633 in the wild and no public exploit code.
Other vulnerabilities in Renesas rcar_gen3_v2.5
Sources
Also known as GHSA-wj7c-h9x2-w8cg.