Out-of-bounds Read in Libcoap

CVE-2023-35862

libcoap 4.3.1 contains a buffer over-read via the function coap_parse_oscore_conf_mem at coap_oscore.c.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

  • Libcoap — versions 4.3.1
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-35862?
CVE-2023-35862 is a medium-severity vulnerability in Libcoap, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2023-06-19.
How severe is CVE-2023-35862?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-35862 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.