Use-after-free in BusyBox - CVE-2023-42365
Published: June 27, 2024 / Updated: April 25, 2025
Vulnerability identifier: #VU93458
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-42365
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: busybox.net
Affected software:
BusyBox
BusyBox
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the copyvar() function in awk.c. A remote attacker can trick the victim to pass a specially crafted awk pattern to the application and crash it.
How to mitigate CVE-2023-42365
Install updates from vendor's website.