CVE Vulnerabilities

CVE-2023-42363

Use After Free

Published: Nov 27, 2023 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.8 MODERATE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM

A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Busybox Busybox 1.36.1 (including) 1.36.1 (including)
Busybox Ubuntu bionic *
Busybox Ubuntu devel *
Busybox Ubuntu lunar *
Busybox Ubuntu mantic *
Busybox Ubuntu noble *
Busybox Ubuntu oracular *
Busybox Ubuntu plucky *
Busybox Ubuntu trusty *
Busybox Ubuntu xenial *

Potential Mitigations

References