Home/CVE/An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior via a sequence of messages leadin
CVE

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 leadin

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.

HIGH · CVSS 7.5 EPSS 0.00088
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

2
libcoapall versions
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · 1351github.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Apr 2024 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LPENEJBV3KSASIYKNZAKXDAH7Q66KPYG/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUL7QDYFGEIJVO2ZSG4O5HEAWR6PFC52/
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