Opencast < 7.9, 8.0 < 8.9 Hostname Verification Vulnerability

Opencast is prone to a hostname verification vulnerability. Copyright C 2020 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; y...

USN-4665-1: curl vulnerabilities

Marc Aldorasi discovered that curl incorrectly handled the libcurl CURLOPTCONNECTONLY option. This could result in data being sent to the wrong destination, possibly exposing sensitive information. This issue only affected Ubuntu 20.10. CVE-2020-8231 Varnavas Papaioannou discovered that curl...

Man-in-the-Middle (MitM)

opencast-kernel is vulnerable to man-in-the-middle MitM. The vulnerability exists through the lack of hostname verification on the certificate when HTTPS connections are made...

CVE-2020-26961

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

CVE-2020-26961

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

Design/Logic Flaw

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

CVE-2020-26961

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

CVE-2020-26961

CVE-2020-26961 describes a DoH-related issue where IPv4 addresses mapped through IPv6 bypass RFC1918 filtering, enabling a DNS rebinding-like condition in Firefox/Thunderbird before versions 83/78.5. Connected sources (CentOS advisories) confirm Mozilla patches addressing multiple issues includin...

CVE-2020-26961

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

CVE-2020-26961

When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding...

CVE-2020-26234

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

CVE-2020-26234

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

Code injection

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

Disabled Hostname Verification in Opencast

Opencast before version 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

GHSA-44CW-P2HM-GPF6 Disabled Hostname Verification in Opencast

Opencast before version 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

CVE-2020-26234 Disabled Hostname Verification in OpenCast

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for...

CVE-2020-26234

Opencast versions before 8.9 and 7.9 disable HTTPS hostname verification in its HTTP client, enabling potential MITM attacks. Root cause: hostname verification was disabled for a large portion of HTTP requests. Affected component/file: Opencast HTTP client. Impact: confidentiality/integrity conce...

Oblivious DNS-over-HTTPS

This new protocol, called Oblivious DNS-over-HTTPS ODoH, hides the websites you visit from your ISP. Heres how it works: ODoH wraps a layer of encryption around the DNS query and passes it through a proxy server, which acts as a go-between the internet user and the website they want to visit...

Hackers-For-Hire Group Develops New 'PowerPepper' In-Memory Malware

Cybersecurity researchers on Thursday disclosed details of a previously undiscovered in-memory Windows backdoor developed by a hacker-for-hire operation that can execute remotely malicious code and steal sensitive information from its targets in Asia, Europe, and the US. Dubbed "PowerPepper" by...

DeathStalker APT Spices Things Up with PowerPepper Malware

The DeathStalker advanced persistent threat APT group has a hot new weapon: A highly stealthy backdoor that researchers have dubbed PowerPepper, used to spy on targeted systems. DeathStalker offers mercenary, espionage-for-hire services targeting the financial and legal sectors, according to...