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

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.009 (57.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-40295: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.