CVE-2025-65495

Name
CVE-2025-65495
Description
Integer signedness error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2d_X509() to return -1 and be misused as a malloc() size parameter.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://github.com/obgm/libcoap/issues/1744
cve@mitre.org https://github.com/obgm/libcoap/pull/1750

Match rules

CPE URI Source package Min version Max version
n/a == n/a == None
cpe:2.3:a:libcoap:libcoap:4.3.5:-:*:*:*:*:*:* libcoap == None == 4.3.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libcoap edge-community 4.3.5-r0 Sören Tempel <soeren+alpine@soeren-tempel.net> possibly vulnerable
libcoap 3.22-community 4.3.5-r0 Sören Tempel <soeren+alpine@soeren-tempel.net> possibly vulnerable