CVE-2023-42363: busybox Use After Free
CVSS: 5.5v3.1MediumModified
AliasesALPINE-CVE-2023-42363UBUNTU-CVE-2023-42363DEBIAN-CVE-2023-42363CGA-fcc3-vmv9-93q2CGA-qqm7-33fh-4r76openSUSE-SU-2024:14237-1
Published 27-11-2023Last modified 02-08-2024
Vulnerability summary
CVE-2023-42363 is a medium (CVSS 5.5) Use After Free vulnerability in busybox. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 9 · Related 11Timeline
- 27-11-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
A use-after-free vulnerability was discovered in xasprintf function in xfuncs_printf.c:344 in BusyBox v.1.36.1.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.43% on 18-09-2026
18-09-202618-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugs.busybox.net)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- busybox< 1.35.0-r31 | < 1.36.1-r7 | < 1.36.1-r17 | < 1.36.1-r27
Busybox1 product
- busybox1.36.1
Chainguard1 product
- busyboxAll versions (No fix recorded)
Debian1 product
- busybox< 1:1.35.0-4+deb12u1 | < 1:1.37.0-1
Opensuse1 product
- trivy&distro=openSUSE Tumbleweed< 0.54.1-1.1
Ubuntu1 product
- busybox< 1:1.36.1-6ubuntu3.1
Wolfi1 product
- busyboxAll versions (No fix recorded)
7 vendors · 7 products
