net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...

security-field-notes

Security Field Notes Archived articles on network security re...

Important: Red Hat Security Advisory: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabili...

FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response

A flaw was found in FreeRDP. A remote attacker, specifically a malicious TS Gateway, can exploit a heap-buffer-overflow vulnerability by sending a specially crafted Remote Desktop Protocol RDP response. This occurs because the client incorrectly uses a smaller allochint value instead of the actua...

kernel: Kernel: Remote out-of-bounds write in RDMA/siw

A flaw was found in the Linux kernel's Soft iWARP siw driver. A remote attacker, by sending specially crafted Read Response segments that exceed the requested length, can trigger an out-of-bounds write. This vulnerability can lead to memory corruption, potentially causing a kernel crash or...

Learning Intrusion Response Strategies for OT Systems

Cyberattacks against Operational Technology OT systems, which monitor and control industrial processes, pose an increasing threat to essential societal services. For this reason, developing automated intrusion response strategies is highly important. In this paper, we present a formal model of an...

PT-2026-89246

This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider. The module does not properly restrict which signature algorithm may be used to validate a SAML assertion, allowing the algorithm to be influenc...

RHEL 8 : freerdp (RHSA-2026:65855)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:65855 advisory. FreeRDP is a free implementation of the Remote Desktop Protocol RDP, released under the Apache license. The xfreerdp client can connect to...

Kibana 9.4.x < 9.4.4 Information Disclosure (ESA-2026-161)

The version of Kibana installed on the remote host is 9.4.x prior to 9.4.4. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-161 advisory. - Observable Response Discrepancy CWE-204 in the Kibana Osquery feature can lead to information disclosure via Query System for...

PT-2026-88760

Name of the Vulnerable Software and Affected Versions Tor versions prior to 0.4.9.12 Description The software incorrectly interprets the CC RESPONSE extension even when a CC REQUEST was not previously sent. This behavior allows remote attackers to corrupt the congestion-control state, leading to ...

SUSE CVE-2026-84947

undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the interceptor instead signals completion...

CVE-2026-18540

A flaw was found in undici. An attacker-controlled upstream server can exploit a vulnerability in the retry interceptor, which incorrectly appends data to a ranged retry response. This can cause the response body to be longer than the Content-Length observed by the application. Consequently, an...

CVE-2026-78629

The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's policy requires no MFA for a given user. The response contains only a bare boolean validation indicator with no cryptographic artifact, resulting in an unverifiable authentication...

HTTPX2: Streaming response decompression does not bound peak memory (decompression amplification)

Summary When decoding a compressed response body gzip, deflate, br, or zstd, HTTPX2 fully decompressed each network read before yielding content to the application. A small compressed input could therefore cause a large intermediate memory allocation, even when the application streamed the respon...

GHSA-8XX6-HGC6-GC2M HTTPX2: Streaming response decompression does not bound peak memory (decompression amplification)

Summary When decoding a compressed response body gzip, deflate, br, or zstd, HTTPX2 fully decompressed each network read before yielding content to the application. A small compressed input could therefore cause a large intermediate memory allocation, even when the application streamed the respon...

Data Amplification

Overview httpx2 is a The next generation HTTP client. Affected versions of this package are vulnerable to Data Amplification in the default transport's response decompression, which inflates each network read of up to 64 KiB completely into a single intermediate allocation before yielding any...

CVE-2026-78629 Improper Authentication Verification in the Okta Hyperdrive Agent MFA Response Handling

The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's policy requires no MFA for a given user. The response contains only a bare boolean validation indicator with no cryptographic artifact, resulting in an unverifiable authentication...

CVE-2026-78629 Improper Authentication Verification in the Okta Hyperdrive Agent MFA Response Handling

The Okta Hyperdrive agent plugin returns a success response without a signed SAML assertion when the organization's policy requires no MFA for a given user. The response contains only a bare boolean validation indicator with no cryptographic artifact, resulting in an unverifiable authentication...

CVE-2026-78629

The Okta Hyperdrive agent plugin contains an improper authentication verification flaw in its MFA response handling. When an organization's policy does not require MFA for a given user, the plugin returns a success response that contains only a bare boolean validation indicator rather than a sign...

net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME

A flaw was found in the net package of Go golang, specifically when using the LookupCNAME function with the cgo DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name CNAME response. This can trigger a double-free of C memory, leading to a crash and a Denial of...