NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.

Project Subscriptions

Vendors Products
Libcoap Subscribe
Libcoap Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 01 Dec 2025 17:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:libcoap:libcoap:4.3.5:-:*:*:*:*:*:*

Thu, 27 Nov 2025 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Libcoap
Libcoap libcoap
Vendors & Products Libcoap
Libcoap libcoap

Mon, 24 Nov 2025 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 24 Nov 2025 14:15:00 +0000

Type Values Removed Values Added
Description NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-24T14:49:31.807Z

Reserved: 2025-11-18T00:00:00.000Z

Link: CVE-2025-65494

cve-icon Vulnrichment

Updated: 2025-11-24T14:47:55.754Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-24T14:15:46.910

Modified: 2025-12-01T17:17:59.540

Link: CVE-2025-65494

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-27T09:45:30Z

Weaknesses