Use-after-free in BusyBox - CVE-2023-42363

Vulnerability identifier: #VU93460

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-2023-42363

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: busybox.net

Affected software:
BusyBox

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 xasprintf() function in xfuncs_printf.c. A remote attacker can trick the victim to pass a specially crafted input to the application and crash it.

Install updates from vendor's website.

• https://bugs.busybox.net/show_bug.cgi?id=15865