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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (53.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Libcoap — versions 4.3.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/obgm/libcoap/issues/1117 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/obgm/libcoap/pull/1118 (Patch)
- github.com/obgm/libcoap/tags (Product)
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.