CVE-2025-65500

CVE-2025-65500 affects libcoap 4.3.5 (OISM libcoap) and is due to a NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c. This can allow a remote attacker to cause a denial of service by crafting a DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL. Multiple so...

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...

Linux Distros Unpatched Vulnerability : CVE-2025-65499

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

PT-2025-47914

NULL pointer dereference in coap dtls generate cookie in src/coap openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL get SSL CTX to return 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-2025-65498

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-2025-65501

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-2025-65497

CVE-2025-65497 describes a NULL pointer dereference in the CoAP library libcoap 4.3.5 (coap_dtls_generate_cookie in src/coap_openssl.c). A crafted DTLS handshake can cause a denial of service by making SSL_get_SSL_CTX() return NULL. Multiple connected advisories note a fix/update to a 4.3.5a rele...

PT-2025-47913

Array index 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 DTLS handshake that triggers SSL get ex data X509 STORE CTX idx to return -1...

CVE-2025-65496

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 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...

OESA-2025-2708 golang security update

. Security Fixes: tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When...

TencentOS Server 4: openvpn (TSSA-2025:0278)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0278 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

Slackware: Security Advisory (SSA:2025-323-01)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

TencentOS Server 4: tomcat (TSSA-2024:0569)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2024:0569 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

[slackware-security] openvpn

New openvpn packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/openvpn-2.6.16-i586-1slack15.0.txz: Upgraded. This update fixes a security issue: Fix memcmp check for the hmac verification in the...

github.com/quic-go/quic-go: quic-go Crash Due to Premature HANDSHAKE_DONE Frame

A denial of service flaw has been discovered in the quic-go golang library. A misbehaving or malicious server can cause a denial-of-service DoS attack on the quic-go client by triggering an assertion failure, leading to a process crash. This requires no authentication and can be exploited during...

Security Bulletin: Erlang/OTP SSH Handshake Hardening Bypass Enables MitM Injection (Patched in OTP 25–27 Updates)

Summary Erlang/OTP is a set of libraries for the Erlang programming language. In versions prior to OTP-27.3.4 for OTP-27, OTP-26.2.5.12 for OTP-26, and OTP-25.3.2.21 for OTP-25, Erlang/OTP SSH fails to enforce strict KEX handshake hardening measures by allowing optional messages to be exchanged...

Linux Distros Unpatched Vulnerability : CVE-2025-13086

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7alpha1 through 2.7rc1 allows an attacker to open a session from a...