curl: TLS peer-verification bypass via mid-transfer ssl_config mutation

Hi all, We want to report a TLS peer-verification issue on current master. The trigger is narrow and requires a specific application usage pattern, but when it fires, a transfer that requests CURLOPTSSLVERIFYPEER=1 can reuse a TLS connection that was established with peer verification disabled...

curl: TLS verifyhost bypass in rustls, mbedTLS, and wolfSSL when verifypeer=0

The now-well-known CURLOPTSSLVERIFYHOST-bypass-when-CURLOPTSSLVERIFYPEER=0 defect exists in three of curl's TLS backends: rustls EXPERIMENTAL, mbedTLS, and wolfSSL DNS hostnames only. The documented contract at docs/libcurl/opts/CURLOPTSSLVERIFYPEER.md:57-59: The check that the host name in the...

CVE-2026-42225

PJSIP’s GnuTLS-enabled SIP TLS transport (sip_transport_tls) in builds prior to version 2.17 can accept connections with invalid/untrusted certificates even when verify_server/verify_client are PJ_TRUE. The vulnerability arises from certificate verification being effectively skipped for those bui...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation due to insufficient peer verification logic in the verifyPeerCert function. An attacker can impersonate privileged API components and execute unauthorized operations by compromising a single instance and...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation due to insufficient peer verification logic in the verifyPeerCert function. An attacker can impersonate privileged API components and execute unauthorized operations by compromising a single instance and...

Linux Distros Unpatched Vulnerability : CVE-2018-17187

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The Apache Qpid Proton-J transport includes an optional wrapper layer to perform TLS, enabled by use of the 'transport.ssl...' methods. Unless a verification mo...

openssl: RFC7250 handshakes with unauthenticated servers don't abort as expected

A flaw was found in OpenSSL's RFC7250 Raw Public Key RPK authentication. This vulnerability allows man-in-the-middle MITM attacks via failure to abort TLS/DTLS handshakes when the server's RPK does not match the expected key despite the SSLVERIFYPEER verification mode being set...

SUSE CVE-2024-12797

Issue summary: Clients using RFC7250 Raw Public Keys RPKs to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSLVERIFYPEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys m...

DEBIAN-CVE-2024-12797

Issue summary: Clients using RFC7250 Raw Public Keys RPKs to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSLVERIFYPEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys m...

AZL-56774 CVE-2024-12797 affecting package openssl for versions less than 3.3.3-1

Issue summary: Clients using RFC7250 Raw Public Keys RPKs to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSLVERIFYPEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys m...

AZL-78591 CVE-2024-12797 affecting package openssl-fips-provider 3.1.2-1

Issue summary: Clients using RFC7250 Raw Public Keys RPKs to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSLVERIFYPEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys m...

PT-2024-36830 · Tcpdf +2 · Tcpdf +2

Name of the Vulnerable Software and Affected Versions: TCPDF versions prior to 6.8.0 Description: An issue was discovered in TCPDF. If libcurl is used, CURLOPT SSL VERIFYHOST and CURLOPT SSL VERIFYPEER are set unsafely. Recommendations: For versions prior to 6.8.0, update to version 6.8.0 or late...

PT-2024-24983 · Google · Nest

Name of the Vulnerable Software and Affected Versions: Nest production devices affected versions not specified Description: The issue concerns the libcurl CURLOPT SSL VERIFYPEER option being disabled on a subset of requests made by Nest production devices. This enabled a potential man-in-the-midd...

SUSE CVE-2017-1000256

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default...

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default.

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Missing TLS certificate verification in faye-websocket

The Faye::WebSocket::Client class uses the EM::Connectionstarttls1 method in EventMachine2 to implement the TLS handshake whenever a wss: URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a...

ALPINE-CVE-2017-1000256

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default...

CVE-2017-1000256

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default...

DEBIAN-CVE-2017-1000256

libvirt version 2.3.0 and later is vulnerable to a bad default configuration of "verify-peer=no" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default...

libvirt TLS Certificate Validation Vulnerability

libvirt is a set of free , open source support for the mainstream virtualization tools under Linux C function library . A TLS certificate validation vulnerability exists in Libvirt 2.3.0 and later. The vulnerability is caused by an error in the default configuration "verify-peer=no" passed to QEM...