CVE-2024-23647 PKCE downgrade attack in Authentik

Authentik is an open-source Identity Provider. There is a bug in our implementation of PKCE that allows an attacker to circumvent the protection that PKCE offers. PKCE adds the codechallenge parameter to the authorization request and adds the codeverifier parameter to the token request. Prior to...

Weak TLS Encryption

MeshCentral is vulnerable to TLS Downgrade Attack. The vulnerability is due to the usage of TLS that includes known vulnerabilities. An attacker can possibly eavesdrop on communication as result of this vulnerability...

Authentication Bypass

Authentik is vulnerable to Authentication Bypass. The vulnerability is due to improper validation of the codechallenge parameter from the PKCE authorization request. This issue can be exploited by an attacker by removing the codechallenge parameter resulting in authentication downgrade...

GHSA-MRX3-GXJX-HJQJ Authentik vulnerable to PKCE downgrade attack

Summary PKCE is a very important countermeasure in OAuth2 , both for public and confidential clients. It protects against CSRF attacks and code injection attacks. Because of this bug, an attacker can circumvent the protection PKCE offers. Patches authentik 2023.8.7 and 2023.10.7 fix this issue...

Authentik vulnerable to PKCE downgrade attack

Summary PKCE is a very important countermeasure in OAuth2 , both for public and confidential clients. It protects against CSRF attacks and code injection attacks. Because of this bug, an attacker can circumvent the protection PKCE offers. Patches authentik 2023.8.7 and 2023.10.7 fix this issue...

GHSA-WPXW-5XFM-X22V MeshCentral algorithm-downgrade issue

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

MeshCentral algorithm-downgrade issue

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

CVE-2023-51842

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

CVE-2023-51842

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

CVE-2023-51842

CVE-2023-51842 involves MeshCentral by Ylianst, affecting version 1.1.16. Public records describe an algorithm-downgrade issue, with CVSS v3.1 base score 7.5 (HIGH; Network attack vector, no privileges, no user interaction). The available documents do not provide specifics on the root cause beyon...

CVE-2023-51842

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

PT-2024-14313 · Ylianst · Ylianst Meshcentral

Name of the Vulnerable Software and Affected Versions: Ylianst MeshCentral version 1.1.16 Description: An algorithm-downgrade issue was discovered. Recommendations: For Ylianst MeshCentral version 1.1.16, at the moment, there is no information about a newer version that contains a fix for this...

PT-2024-19998

Name of the Vulnerable Software and Affected Versions Authentik versions prior to 2023.8.7 Authentik versions prior to 2023.10.7 Description Authentik is an open-source Identity Provider with a bug in its implementation of PKCE, allowing an attacker to circumvent the protection that PKCE offers...

CVE-2023-51842

An algorithm-downgrade issue was discovered in Ylianst MeshCentral 1.1.16...

USN-6598-1 paramiko vulnerability

Fabian Bäumer, Marcus Brinkmann, Jörg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being...

SUSE SLES15: erlang / erlang-debugger / erlang-debugger-src / erlang-dialyzer / etc (SUSE-SU-2024:0210-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0210-1 advisory. - CVE-2023-48795: Fixed prefix truncation breaking ssh channel integrity aka Terrapin Attack bsc1218192 Tenable has extracted...

Ubuntu: Security Advisory (USN-6589-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 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...

USN-6589-1 filezilla vulnerability

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH protocol used in FileZilla is prone to a prefix truncation attack, known as the "Terrapin attack". A remote attacker could use this issue to downgrade or disable some security features and obtain sensitive information...

SUSE-SU-2024:0140-1 Security update for libssh

This update for libssh fixes the following issues: Security fixes: - CVE-2023-6004: Fixed command injection using proxycommand bsc1218209 - CVE-2023-48795: Fixed potential downgrade attack using strict kex bsc1218126 - CVE-2023-6918: Fixed missing checks for return values of MD functions bsc12181...

Fedora 39 : golang-x-crypto (2024-7b08207cdb)

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-7b08207cdb advisory. Update golang-x-crypto to v0.18.0, fix for CVE-2023-48795 Tenable has extracted the preceding description block directly from the Fedora security...