Stack-based buffer overflow in Universal Boot Loader (U-Boot) - CVE-2019-13106
Published: August 8, 2019 / Updated: December 20, 2022
Vulnerability identifier: #VU19989
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red
CVE-ID: CVE-2019-13106
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: DENX
Affected software:
Universal Boot Loader (U-Boot)
Universal Boot Loader (U-Boot)
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when the ext4 code can overwrite portions of the stack with 0s in the "ext4fs_read_file" function. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
This vulnerability can easily give complete control of the CPU, which would defeat verified boot
How to mitigate CVE-2019-13106
Install update from vendor's website.