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: 9.3 [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]
CVE-ID: CVE-2019-13106
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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
Affected software
Universal Boot Loader (U-Boot)
Opensuse
Opensuse
How to mitigate CVE-2019-13106
Install update from vendor's website.