cve-2009-3555-test-server

这是什么？ 这是一个使用Go TLS栈的vendored fork实现的TLS服务器，其中强制禁用了重新协商指示扩展，这将触发OpenSSL 3.0+中针对CVE-2009-3555的缓解措施。注意，它实际上并不容易受到CVE-2009-3555的影响，因为Go TLS栈根本不允许重新协商。 该程序的作用是充当测试服务器，用于测试那些拒绝连接到具有不安全客户端重新协商配置的服务器（例如没有设置SSLOPALLOWUNSAFELEGACYRENEGOTIATION选项的OpenSSL 3.0+）的TLS客户端。...

bash-tls-reneg-attack

bash-tls-reneg-attack 一个使用 openssl 客户端尝试通过 TLS 重新协商淹没服务器的 bash 脚本。详见 CVE-2011-1473 和 CVE-2011-1473。 用法: ./tls-reneg.sh some.hostname.here:port...

cve-2021-3449

CVE-2021-3449 OpenSSL 该问题于 2021 年 3 月 17 日由诺基亚报告给 OpenSSL。修复由 Peter Kästle 和 Samuel Sapalski（诺基亚）开发。 缓解措施 已知的唯一修复方法是更新 libssl1.1。 即使某些应用默认使用强化 TLS 配置禁用了 TLS 重新协商， 如果它们运行在旧版 OpenSSL 上，仍然会受到此漏洞的影响。 利用代码 main.go 是一个小巧的脚本，它连接到一个 TLS 服务器，强制重新协商，然后断开连接。 利用代码被注入到 Go 1.14.15 捆绑的 encoding/tls 包中。 你可以在...

OpenVPN 2.6.0 < 2.6.21 / 2.7.x < 2.7.5 Multiple Vulnerabilities

According to its self-reported version number, the version of OpenVPN installed on the remote Windows host is affected by multiple vulnerabilities: - A use-after-free bug in ackwritebuf, triggerable by a well-timed sequence of control channel and authentication packets. CVE-2026-12996 - A...

CVE-2026-13117

An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage...

Astra Linux – Vulnerability in freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.22.0, the renegotiation of the AUDIN format freed the active format list, while the capture thread continued to use audin-format. This led to a use after free in audioformatcompatible. This vulnerability has been...

JLSEC-2026-519

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a norenegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the...

PT-2026-47001

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutl...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

CLSA-2026-1778489013 spice: Fix of CVE-2021-20201

CVE-2021-20201: fix DoS via uncontrolled TLS renegotiation by disabling client-initiated renegotiation...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

JLSEC-2026-223 openssl-src NULL pointer Dereference in `signature_algorithms` processing

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signaturealgorithms extension where it was present in the initial ClientHello, but includes a signaturealgorithmscert extension then a NU...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

Important: Red Hat Security Advisory: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

CVE-2026-31437 netfs: Fix NULL pointer dereference in netfs_unbuffered_write() on retry

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...

freerdp: FreeRDP: Denial of Service via use-after-free in AUDIN format renegotiation

A use after free flaw was found in FreeRDP. AUDIN format renegotiation frees the active format list while the capture thread continues using audin-format, leading to a use after free in audioformatcompatible. A malicious server can trigger a client‑side heap use after free causing a crash...