#VU101887 Incorrect calculation in arm-trusted-firmware - CVE-2024-6287

Vulnerability identifier: #VU101887

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-6287

CWE-ID: CWE-682

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
arm-trusted-firmware
Hardware solutions / Firmware

Vendor: renesas-rcar

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect calculation. When checking whether a new image invades/overlaps with a previously loaded image the code neglects to consider a few cases. A local user can bypass secure boot restrictions and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

arm-trusted-firmware: All versions

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External links
https://github.com/renesas-rcar/arm-trusted-firmware/commit/954d488a9798f8fda675c6b57c571b469b298f04
https://asrg.io/security-advisories/cve-2024-6287/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.