[Debian-iot-maintainers] Bug#1084981: libcoap3: CVE-2023-51847 CVE-2024-46304

[Moritz Mühlenhoff]

Source: libcoap3
X-Debbugs-CC: team at security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerabilities were published for libcoap3.

CVE-2023-51847[0]:
| An issue in obgm and Libcoap v.a3ed466 allows a remote attacker to
| cause a denial of service via thecoap_context_t function in the
| src/coap_threadsafe.c:297:3 component.

https://github.com/obgm/libcoap/issues/1509

CVE-2024-46304[1]:
| A NULL pointer dereference in libcoap v4.3.5-rc2 and below allows a
| remote attacker to cause a denial of service via the
| coap_handle_request_put_block function in src/coap_block.c.

https://github.com/obgm/libcoap/issues/1509


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

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-51847
    https://www.cve.org/CVERecord?id=CVE-2023-51847
[1] https://security-tracker.debian.org/tracker/CVE-2024-46304
    https://www.cve.org/CVERecord?id=CVE-2024-46304

Please adjust the affected versions in the BTS as needed.