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CVE-2024-1633

LOWCVSS 2/10EPSS 0.14%

Last modified

CVE-2024-1633 is a low-severity vulnerability rated 2/10 on the CVSS scale. 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  . EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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 

Metrics

CVSS 3.1
2/10

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability
0.14%

4.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RenesasArm-Trusted-Firmwarercar_gen3_2.5

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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 
How severe is CVE-2024-1633?
CVE-2024-1633 has a CVSS score of 2/10 (LOW severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2024-1633?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST