Vulnerability · Published Jun 23, 2023 · Assigned by mitre
CVE-2023-30362
High 7.5
In plain English
A high-severity security flaw in the libcoap3 package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)0.8%top 44.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in coap_send function in libcoap library 4.3.1-103-g52cfd56 fixed in 4.3.1-120-ge242200 allows attackers to obtain sensitive information via malformed pdu.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libcoap3 | no fix listed | DEBIAN-CVE-2023-30362 |
| Debian:13 | libcoap3 | 4.3.1-2 | DEBIAN-CVE-2023-30362 |
| Debian:14 | libcoap3 | 4.3.1-2 | DEBIAN-CVE-2023-30362 |
| Ubuntu:22.04:LTS | libcoap2 | no fix listed | UBUNTU-CVE-2023-30362 |
| Ubuntu:22.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-30362 |
| Ubuntu:24.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-30362 |
| Ubuntu:25.10 | libcoap3 | no fix listed | UBUNTU-CVE-2023-30362 |
| Ubuntu:26.04:LTS | libcoap3 | no fix listed | UBUNTU-CVE-2023-30362 |
| Ubuntu:26.10 | libcoap3 | no fix listed | UBUNTU-CVE-2023-30362 |