CVE-2023-35862 Memory corruption in n/a

Medium 6.5 Published 19 Jun 2023 Updated 11 Dec 2024

A buffer over-read in libcoap allows attackers to cause denial of service or disclose sensitive memory contents.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-35862?

CVE-2023-35862 is a medium-severity memory corruption vulnerability in n/a, published on 19 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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

Weakness: CWE-125

Which versions are affected by CVE-2023-35862?

It affects 1 product.

Products include Libcoap Libcoap.

How do I fix CVE-2023-35862?

No fix has been published for CVE-2023-35862 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-35862 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-35862 exists.

Sources

Also known as GHSA-84qc-gm86-22q4, UBUNTU-CVE-2023-35862.