A deep-dive into the SolarWinds Serv-U SSH vulnerability

Several weeks ago, Microsoft detected a 0-day remote code execution exploit being used to attack the SolarWinds Serv-U FTP software in limited and targeted attacks. The Microsoft Threat Intelligence Center MSTIC attributed the attack with high confidence to DEV-0322, a group operating out of Chin...

A deep-dive into the SolarWinds Serv-U SSH vulnerability

Several weeks ago, Microsoft detected a 0-day remote code execution exploit being used to attack the SolarWinds Serv-U FTP software in limited and targeted attacks. The Microsoft Threat Intelligence Center MSTIC attributed the attack with high confidence to DEV-0322, a group operating out of Chin...

GHSA-7774-7VR3-CC8J Authorization Policy Bypass Due to Case Insensitive Host Comparison

Impact According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The Envoy proxy will route the request hostname in a case-insensitive way which means the authorization policy...

Authorization Policy Bypass Due to Case Insensitive Host Comparison

Impact According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The Envoy proxy will route the request hostname in a case-insensitive way which means the authorization policy...

How Does MTA-STS Improve Your Email Security?

Simple Mail Transfer Protocol or SMTP has easily exploitable security loopholes. Email routing protocols were designed in a time when cryptographic technology was at a nascent stage e.g., the de-facto protocol for email transfer, SMTP, is nearly 40 years old now, and therefore security was not an...

Improper Handling of Case Sensitivity

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case...

Improper Handling of Case Sensitivity

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case...

GHSA-6HFQ-H8HQ-87MF HTTP Request Smuggling in hyper

Summary hyper's HTTP server code had a flaw that incorrectly understands some requests with multiple transfer-encoding headers to have a chunked payload, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that understands the request payload boundary different...

HTTP Request Smuggling in hyper

Summary hyper's HTTP server code had a flaw that incorrectly understands some requests with multiple transfer-encoding headers to have a chunked payload, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that understands the request payload boundary different...

CVE-2021-39155

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. According to RFC 4343, Istio authorization policy should compare the hostname in the HTTP Host header in a case...

CVE-2020-35685

An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing...

Code injection

An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing...

CVE-2020-35685

An issue was discovered in HCC Nichestack 3.0. The code that generates Initial Sequence Numbers ISNs for TCP connections derives the ISN from an insufficiently random source. As a result, an attacker may be able to determine the ISN of current and future TCP connections and either hijack existing...

CVE-2020-35685

CVE-2020-35685 affects HCC Nichestack/NicheStack up to versions preceding 4.3, where ISNs are generated from an insufficiently random source. This enables an attacker to potentially hijack existing TCP connections or spoof future ones, as ISN predictability undermines TCP security. The ICS/CISA a...

HTTP Request Smuggling in Web Proxies

Overview HTTP web proxies and web accelerators that support HTTP/2 for an HTTP/1.1 backend webserver are vulnerable to HTTP Request Smuggling. Description The affected systems allow invalid characters such as carriage return and newline characters in HTTP/2 headers. When an attacker passes these...

SAP NetWeaver AS ABAP Memory Corruption (July 2021)

A memory corruption vulnerability exists in SAP NetWeaver AS ABAP due to buffer overflow from RFC Requests. An unauthenticated, remote attacker can exploit this by sending overlong content, crashing the corresponding work process. Note that Nessus has not tested for this issue but has instead...

Fedora: Security Advisory for vmod-uuid (FEDORA-2021-cf7585f0ca)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

July 27, 2021—KB5005394 (OS Build 17763.2091) Out-of-band

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[SECURITY] Fedora 34 Update: vmod-uuid-1.8-4.fc34

UUID Varnish vmod used to generate a uuid, including versions 1, 3, 4 and 5 as specified in RFC 4122. See the RFC for details about the various versions...

CVE-2021-33684

CVE-2021-33684 affects SAP NetWeaver AS ABAP and ABAP Platform (multiple KRNL32NUC/KRNL32UC/KRNL64NUC/KRNL64UC/KERNEL versions). The issue is a memory corruption vulnerability caused by processing overly long content in RFC requests, which can crash the affected work process. The process then res...