Vulnerability · Published Jun 19, 2023 · Assigned by mitre
CVE-2023-35862
Medium 6.5
In plain English
A medium-severity security flaw in the libcoap2 package (Ubuntu). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.8%top 44.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
libcoap 4.3.1 contains a buffer over-read via the function coap_parse_oscore_conf_mem at coap_oscore.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | libcoap2 | no fix listed | UBUNTU-CVE-2023-35862 |
| Ubuntu:22.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-35862 |
| Ubuntu:24.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-35862 |
| Ubuntu:25.10 | libcoap3 | no fix listed | UBUNTU-CVE-2023-35862 |
| Ubuntu:26.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-35862 |
| Ubuntu:26.10 | libcoap3 | no fix listed | UBUNTU-CVE-2023-35862 |