[Debian-iot-maintainers] Bug#1070362: libcoap3: CVE-2024-31031

[Salvatore Bonaccorso]

Source: libcoap3
Version: 4.3.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/obgm/libcoap/issues/1351
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for libcoap3.

CVE-2024-31031[0]:
| An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause
| undefined behavior via a sequence of messages leading to unsigned
| integer overflow.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2024-31031
    https://www.cve.org/CVERecord?id=CVE-2024-31031
[1] https://github.com/obgm/libcoap/issues/1351
[2] https://github.com/obgm/libcoap/commit/214665ac4b44b1b6a7e38d4d6907ee835a174928

Regards,
Salvatore