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

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
https://lists.fedoraproject.org/archives/list/[email protected]/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/
https://lists.fedoraproject.org/archives/list/[email protected]/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/

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

04 Nov 2025, 22:16

Type	Values Removed	Values Added
References		() https://lists.fedoraproject.org/archives/list/[email protected]/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/ - () https://lists.fedoraproject.org/archives/list/[email protected]/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/ -

Information

Published : 2024-04-17 19:15

Updated : 2025-11-04 22:16

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

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