Buffer overflow in 0branch Boron

CVE-2023-40295

libboron in Boron 2.0.8 has a heap-based buffer overflow in ur_strInitUtf8 at string.c.

Vulnerability class: Buffer Overflow

EPSS: 0.009 (55.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

0branch Boron — versions 2.0.8
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2023-40295?: CVE-2023-40295 is a high-severity vulnerability in 0branch Boron, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2023-08-14.
How severe is CVE-2023-40295?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-40295 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.