Buffer overflow in Busybox

CVE-2023-42366

A heap-buffer-overflow was discovered in BusyBox v.1.36.1 in the next_token function at awk.c:1159.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

  • Busybox — versions 1.36.1
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-42366?
CVE-2023-42366 is a medium-severity vulnerability in Busybox, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2023-11-27.
How severe is CVE-2023-42366?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2023-42366 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.