CVE catalog
CVE-2023-42365
BusyBox vulnerabilities
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
A use-after-free vulnerability was discovered in BusyBox v.1.36.1 via a crafted awk pattern in the awk.c copyvar function.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | busybox | sid | 1:1.38.0-3 | fixed |
| Debian | busybox | forky | 1:1.38.0-3 | fixed |
| Debian | busybox | trixie | 1:1.37.0-6 | fixed |
| Debian | busybox | bookworm | 1:1.35.0-4+deb12u1 | fixed |
| Ubuntu | busybox | noble | 1:1.35.0-4+deb12u1 | fixed |
| Ubuntu | busybox | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Ubuntu | busybox-initramfs | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Ubuntu | busybox-static | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Ubuntu | busybox-syslogd | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Ubuntu | udhcpc | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Ubuntu | udhcpd | noble | 1:1.36.1-6ubuntu3.1 | fixed |
| Alpine | busybox | 3.17 | 1.35.0-r31 | fixed |
| Alpine | busybox | 3.18 | 1.36.1-r7 | fixed |
| Alpine | busybox | 3.19 | 1.36.1-r19 | fixed |
| Alpine | busybox | 3.20 | 1.36.1-r29 | fixed |
| Alpine | busybox | 3.21 | 1.36.1-r30 | fixed |
| Alpine | busybox | 3.22 | 1.36.1-r30 | fixed |
| Alpine | busybox | 3.23 | 1.36.1-r30 | fixed |
| Alpine | busybox | 3.24 | 1.36.1-r30 | fixed |
| Ubuntu | busybox | 24.04 | 1:1.36.1-3ubuntu1 | vulnerable |
| Ubuntu | busybox | 24.04 | 1:1.36.1-6ubuntu1 | vulnerable |
| Ubuntu | busybox | 24.04 | 1:1.36.1-6ubuntu3 | vulnerable |
| Ubuntu | busybox | 24.04 | 1:1.36.1-6ubuntu3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | busybox | source | sid | 1:1.37.0-1 | not yet assigned | Not reported | [1059052] |
| Debian | busybox | source | forky | 1:1.37.0-1 | not yet assigned | Not reported | [1059052] |
| Debian | busybox | source | trixie | 1:1.37.0-1 | not yet assigned | Not reported | [1059052] |
| Debian | busybox | source | bookworm | 1:1.35.0-4+deb12u1 | not yet assigned | Not reported | [1059052] |
| Ubuntu | busybox | deb | noble | 1:1.35.0-4+deb12u1 | Not reported | Not reported | Not reported |
| Ubuntu | busybox | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Ubuntu | busybox-initramfs | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Ubuntu | busybox-static | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Ubuntu | busybox-syslogd | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Ubuntu | udhcpc | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Ubuntu | udhcpd | deb | noble | 1:1.36.1-6ubuntu3.1 | Not reported | Not reported | Not reported |
| Alpine | busybox | apk | 3.17 | 1.35.0-r31 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.18 | 1.36.1-r7 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.19 | 1.36.1-r19 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.20 | 1.36.1-r29 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.21 | 1.36.1-r30 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.22 | 1.36.1-r30 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.23 | 1.36.1-r30 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Alpine | busybox | apk | 3.24 | 1.36.1-r30 | Not reported | ALPINE-CVE-2023-42365 | Not reported |
| Ubuntu | busybox | deb | 24.04 | 1:1.36.1-6ubuntu3.1 | Not reported | UBUNTU-CVE-2023-42365 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-089022.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_03205-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2023-42365]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-42365]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-42365]
- [https://security-tracker.debian.org/tracker/CVE-2023-42365]
- [https://ubuntu.com/security/notices/USN-6961-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-3011.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]