TLS Downgrade Attack

github.com/refraction-networking/utls is vulnerable to TLS Downgrade Attack. The vulnerability is due to missing downgrade protection caused due to failure to implement and verify the downgrade canary in TLS 1.3 handshakes when using a custom ClientHello spec, allowing an attacker to force a...

GO-2025-3638 ServerHellos are accepted without checking TLS 1.3 downgrade canaries in github.com/refraction-networking/utls

Before version 1.7.0, utls did not implement the TLS 1.3 downgrade protection mechanism specified in RFC 8446 Section 4.1.3 when using a utls ClientHello spec. This allowed an active network adversary to downgrade TLS 1.3 connections initiated by a utls client to a lower TLS version e.g., TLS 1.2...

uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries

Description Before version 1.7.0, utls did not implement the TLS 1.3 downgrade protection mechanism specified in RFC 8446 Section 4.1.3 when using a utls ClientHello spec. This allowed an active network adversary to downgrade TLS 1.3 connections initiated by a utls client to a lower TLS version...

GHSA-PMC3-P9HX-JQ96 uTLS ServerHellos are accepted without checking TLS 1.3 downgrade canaries

Description Before version 1.7.0, utls did not implement the TLS 1.3 downgrade protection mechanism specified in RFC 8446 Section 4.1.3 when using a utls ClientHello spec. This allowed an active network adversary to downgrade TLS 1.3 connections initiated by a utls client to a lower TLS version...

BIT-NODE-MIN-2021-3449 NULL pointer deref 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...

CVE-2024-11738

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

AZL-61546 CVE-2024-11738 affecting package rust for versions less than 1.86.0-6

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

CVE-2024-11738 Rustls: rustls network-reachable panic in `acceptor::accept`

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

CVE-2024-11738 Rustls: rustls network-reachable panic in `acceptor::accept`

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

CVE-2024-11738 Rustls: rustls network-reachable panic in `acceptor::accept`

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

CVE-2024-11738: Uncaught Exception

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

Rustls 安全漏洞

Rustls is a modern TLS library in Rust open-sourced by Rustls. A security vulnerability exists in Rustls version 0.23.13 that stems from allowing denial of service via fragmented TLS ClientHello messages...

SUSE CVE-2024-11738

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.

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CVE-2024-11738

A flaw was found in Rustls 0.23.13 and related APIs. This vulnerability allows denial of service panic via a fragmented TLS ClientHello message...

GHSA-QG5G-GV98-5FFH rustls network-reachable panic in `Acceptor::accept`

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use rustls::server::Acceptor::accept are affected. Servers that use tokio-rustls's LazyConfigAcceptor API are affected. Servers that use tokio-rustls's TlsAcceptor API are not...

rustls network-reachable panic in `Acceptor::accept`

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use rustls::server::Acceptor::accept are affected. Servers that use tokio-rustls's LazyConfigAcceptor API are affected. Servers that use tokio-rustls's TlsAcceptor API are not...

rustls network-reachable panic in `Acceptor::accept`

A bug introduced in rustls 0.23.13 leads to a panic if the received TLS ClientHello is fragmented. Only servers that use rustls::server::Acceptor::accept are affected. Servers that use tokio-rustls's LazyConfigAcceptor API are affected. Servers that use tokio-rustls's TlsAcceptor API are not...

PT-2024-40945 · Unknown +1 · Tokio-Rustls +2

Name of the Vulnerable Software and Affected Versions: rustls version 0.23.13 Description: A bug in rustls leads to a panic if the received TLS ClientHello is fragmented. This issue affects servers using rustls::server::Acceptor::accept and tokio-rustls's LazyConfigAcceptor API, but not those usi...

PT-2024-17221

Name of the Vulnerable Software and Affected Versions Rustls version 0.23.13 Description A flaw was found in Rustls and related APIs, allowing denial of service panic via a fragmented TLS ClientHello message. Recommendations For Rustls version 0.23.13, consider disabling the handling of fragmente...