CVE-2025-65498: NULL Pointer Dereference

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65500

The libcoap library (version 4.3.5) is vulnerable to a NULL pointer dereference in the coap_dtls_generate_cookie() function located in src/coap_openssl.c. A remote attacker can trigger a denial of service (DoS) by sending a crafted DTLS handshake that causes SSL_get_SSL_CTX() to return NULL . Aff...

CVE-2025-65493

A NULL pointer dereference exists in src/coap_openssl.c within libcoap 4.3.5 , allowing remote attackers to trigger a denial of service (DoS) via a crafted DTLS/TLS connection that causes BIO_get_data() to return NULL. This vulnerability affects various distributions, including Fedora 42 , Fedora...

PT-2025-47910

Name of the Vulnerable Software and Affected Versions libcoap version 4.3.5 Description A flaw exists in the processing of DTLS handshakes due to a NULL pointer dereference within the coap dtls generate cookie function, located in src/coap openssl.c. This issue arises when SSL get SSL CTX returns...

CVE-2025-65500: NULL Pointer Dereference

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

libcoap 安全漏洞

libcoap is a C implementation of a lightweight application protocol open-sourced by obgm. A security vulnerability exists in libcoap version 4.3.5, which stems from a null pointer dereference in the coapdtlsinfocallback function and could lead to a denial of service attack...

CVE-2025-65500

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65497

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65497

A NULL pointer dereference vulnerability exists in libcoap 4.3.5 within the coap_dtls_generate_cookie() function in src/coap_openssl.c. The flaw is caused by improper handling of return values from OpenSSL functions during DTLS (Datagram Transport Layer Security) operations. A remote attacker can...

CVE-2025-65496: NULL Pointer Dereference

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65499: Improper Validation of Array Index

Array index error in tlsverifycallback in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetexdataX509STORECTXidx to return -1...

CVE-2025-65501

Null pointer dereference in coapdtlsinfocallback in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSLgetappdata returns NULL...

CVE-2025-65500

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65501: NULL Pointer Dereference

Null pointer dereference in coapdtlsinfocallback in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSLgetappdata returns NULL...

CVE-2025-65498

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

CVE-2025-65499

Array index error in tlsverifycallback in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetexdataX509STORECTXidx to return -1...

CVE-2025-65501

Null pointer dereference in coapdtlsinfocallback in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSLgetappdata returns NULL...

CVE-2025-65501

Null pointer dereference in coapdtlsinfocallback in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSLgetappdata returns NULL...

CVE-2025-65493

NULL pointer dereference in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIOgetdata to return NULL...

CVE-2025-65500

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...