CVE-2024-31031

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/obgm/libcoap/issues/1351	Exploit Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/	Mailing List Third Party Advisory
https://github.com/obgm/libcoap/issues/1351	Exploit Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libcoap:libcoap:4.3.4:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:39:::::::*
	cpe:2.3:o:fedoraproject:fedora:40:::::::*

History

18 Jun 2025, 19:40

Type	Values Removed	Values Added
First Time		Libcoap Libcoap libcoap Fedoraproject Fedoraproject fedora
CPE		cpe:2.3:o:fedoraproject:fedora:39:::::::* cpe:2.3:a:libcoap:libcoap:4.3.4:::::::* cpe:2.3:o:fedoraproject:fedora:40:::::::*
References	~~() https://github.com/obgm/libcoap/issues/1351 -~~	() https://github.com/obgm/libcoap/issues/1351 - Exploit, Issue Tracking
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ - Mailing List, Third Party Advisory
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ - Mailing List, Third Party Advisory

21 Nov 2024, 09:12

Type	Values Removed	Values Added
References	~~() https://github.com/obgm/libcoap/issues/1351 -~~	() https://github.com/obgm/libcoap/issues/1351 -
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ -
References	~~() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ -~~	() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ -

03 Jul 2024, 01:54

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CWE		CWE-190

03 May 2024, 03:16

Type	Values Removed	Values Added
References		() https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ -
Summary		(es) Un problema en `coap_pdu.c` en libcoap 4.3.4 permite a los atacantes provocar un comportamiento indefinido a través de una secuencia de mensajes que conducen a un desbordamiento de enteros sin signo.

17 Apr 2024, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-04-17 19:15

Updated : 2025-06-18 19:40

NVD link : CVE-2024-31031

Mitre link : CVE-2024-31031

CVE.ORG link : CVE-2024-31031

JSON object : View

Products Affected

libcoap

libcoap

fedoraproject

fedora

CWE

CWE-190

Integer Overflow or Wraparound

7.5 /10