SB2026022417 - Information disclosure in U-Boot

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2024-42040)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the bootp_handler() function in net/bootp.c when handling DHCP packets. A remote attacker on the local network can send specially crafted DHCP packets to the affected system to trigger an out-of-bounds read error and read contents of memory on the system by analyzing DHCP responses.

Remediation

Install update from vendor's website.

References

• https://www.schutzwerk.com/advisories/SCHUTZWERK-SA-2024-004.txt
• https://github.com/u-boot/u-boot/commit/81e5708cc2c865df606e49aed5415adb2a662171
• https://github.com/advisories/GHSA-xh96-vq46-m9ww