Integer overflow in Renesas Arm-Trusted-Firmware

CVE-2024-1633

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

Vulnerability class: Integer Overflow

EPSS: 0.001 (4.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.0 (Low). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-1633?
CVE-2024-1633 is a low-severity vulnerability in Renesas Arm-Trusted-Firmware, classified under Integer Overflow or Wraparound. CVSS score: 2.0/10. Published 2024-02-19.
How severe is CVE-2024-1633?
Low severity. CVSS v3 base score is 2.0 out of 10.
Is CVE-2024-1633 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.