ChamelDoH: New Linux Backdoor Utilizing DNS-over-HTTPS Tunneling for Covert CnC

The threat actor known as ChamelGang has been observed using a previously undocumented implant to backdoor Linux systems, marking a new expansion of the threat actor's capabilities. The malware, dubbed ChamelDoH by Stairwell, is a C++-based tool for communicating via DNS-over-HTTPS DoH tunneling...

ChamelDoH: New Linux Backdoor Utilizing DNS-over-HTTPS Tunneling for Covert CnC

The threat actor known as ChamelGang has been observed using a previously undocumented implant to backdoor Linux systems, marking a new expansion of the threat actor's capabilities. The malware, dubbed ChamelDoH by Stairwell, is a C++-based tool for communicating via DNS-over-HTTPS DoH tunneling...

ChamelGang Strikes Again With ChamelDoH Malware XDNS-over-HTTPS

Threat Level Actor Report For a detailed threat advisory, download the pdf file here Summary The Chinese threat group ChamelGang has developed the Linux malware ChamelDoH, which uses DNS-over-HTTPS for encrypted communication with attackers. To receive real-time threat advisories, please follow...

SUSE 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...

Cloudflare Public Bug Bounty: cd=false (DNSSEC) not respected in DNS over HTTPS JSON requests

The value of the cd check disabled flag was not correctly validated in DNS-over-HTTPS JSON API requests to cloudflare-dns.com. In result, despite explicitly setting the flag value to 0 or false according to the Cloudflare 1.1.1.1 documentation the DNSSEC verification was not enforced for an unawa...

Fedora: Security Advisory for dnscrypt-proxy (FEDORA-2022-5ef0bd9a27)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG 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-only ifdescription...

Google Adds Support for DNS-over-HTTP/3 in Android to Keep DNS Queries Private — The Hacker News

Google on Tuesday officially announced support for DNS-over-HTTP/3 DoH3 for Android devices as part of a Google Play system update designed to keep DNS queries private. To that end, Android smartphones running Android 11 and higher are expected to use DoH3 instead of DNS-over-TLS DoT, which was...

Fedora: Security Advisory for dnscrypt-proxy (FEDORA-2022-3969b64d4b)

The remote host is missing an update for the Copyright C 2022 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...

Fedora: Security Advisory for dnscrypt-proxy (FEDORA-2022-fae3ecee19)

The remote host is missing an update for the Copyright C 2022 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...

DEBIAN-CVE-2022-1183

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

CVE-2022-1183

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

CVE-2022-1183

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

Design/Logic Flaw

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

CVE-2022-1183

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

CVE-2022-1183 Destroying a TLS session early causes assertion failure

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

CVE-2022-1183: Reachable Assertion

On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to http within the listen-on statements in their named.conf. TLS is used by both DNS over TLS DoT and DNS over HTTPS DoH, bu...

Mageia: Security Advisory (MGASA-2020-0427)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG 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-only ifdescription...

Not with a Bang but a Whisper: The Shift to Stealthy C2

As defensive tools have evolved to detect more and more traditional attack techniques, it should come as no surprise that attackers have shifted tactics. This ever-evolving arms race between offensive security toolsets, bespoke advanced persistent threat APT malware and the billion-dollar infosec...

A week in security (July 12 – July 18)

Last week on Malwarebytes Labs: DNS-over-HTTPS takes another small step towards global domination Nope, that isn’t Elon Musk, and he isn’t offering a free Topmist Dust watch either Four in-the-wild exploits, 13 critical patches headline bumper Patch Tuesday Is crypto’s criminal rollercoaster...

DNS-over-HTTPS takes another small step towards global domination

Firefox recently announced that it will be rolling out DNS-over-HTTPS or DoH soon to one percent of its Canadian users as part of its partnership with CIRA the Canadian Internet Registration Authority, the Ontario-based organization responsible for managing the .ca top-level domain for Canada and...