Polkit-exploit

Polkit-exploit - CVE-2021-3560 polkit を用いた権限昇格 - CVE-2021-3560 概要 CVE-2021-3560 は polkit における認証バイパスであり、非特権ユーザーが DBus を使用して特権メソッドを呼び出すことを可能にします。このエクスプロイトでは、accountsservice が提供する 2 つの特権メソッド（CreateUser と SetPassword）を呼び出し、特権ユーザーを作成してパスワードを設定し、最後に作成したユーザーでログインして root に昇格します。 エクスプロイトコードの作者 Ahmad...

bmcweb

Servidor web de OpenBMC Este componente intenta ser un servidor web embebido que lo hace todo para OpenBMC. Características El servidor web implementa varias interfaces distintas: WebSocket de eventos de DBus. Permite registrarse para recibir cambios en rutas y propiedades de dbus específicas, y...

Polkit-CVE-2021-3560

Polkit-CVE-2021-3560 背景 2021年初頭、研究者のKevin Backhouse氏がLinux polkitユーティリティにおいて7年前の特権昇格の脆弱性（以降CVE-2021-3560として指定）を発見しました。幸い、Linuxの各ディストリビューション（および同じディストリビューションの異なるバージョン）は異なるバージョンのソフトウェアを使用しているため、脆弱性があるのは一部のみです。 具体的には、以下の主要なディストリビューションが脆弱でした（他にもあります）： Red Hat Enterprise Linux 8 Fedora 21（以降） Debian...

polkit-auto-exploit

polkit-auto-exploit Polkit CVE-2021-3560 的自动利用 PoC 概要 CVE-2021-3560 是 polkit 的一个认证绕过漏洞，允许非特权用户通过 DBus 调用特权方法。在此利用中，我们将调用 accountsservice 提供的两个特权方法（CreateUser 和 SetPassword），从而创建一个特权用户，然后为其设置密码，最后以创建的用户身份登录并提权到 root。 https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug...

CVE-2021-3560

CVE-2021-3560 基于C语言的可靠CVE-2021-3560漏洞利用程序。 摘要： 昨天我偶然发现了Kevin Backhouse的这篇博客文章（发现了这个漏洞），我尝试了文章中提供的bash命令，令我惊讶的是，它居然在我的Kali Linux机器上生效了！ CVE-2021-3560是polkit上的一个身份验证绕过漏洞，它允许无特权的用户通过DBus调用特权方法。该PoC利用此漏洞调用由accountsservice提供的两个特权方法（CreateUser 和 SetPassword），从而允许我们创建一个特权用户并为其设置密码。...

CVE-2021-3560

Polkitの脆弱性 - CVE-2021-3560 📕 はじめに 2021年、研究者のKevin BackHouse氏がpolkitユーティリティにおける権限昇格の脆弱性を発見しました。ただし、すべてのLinuxバージョンがpolkitに対して脆弱であるわけではありません。 以下は脆弱なバージョンの例です; Red Hat Enterprise Linux 8 Fedora 21 またはそれ以降 Debian Testing "Bullseye" Ubuntu 20.04 LTS "Focal Fossa"...

POC-Bash-CVE-2021-3560

Bash-CVE-2021-3560 POC Bash —— CVE-2021-3560 Polkit 本地权限提升漏洞利用 本仓库提供了一个针对 CVE-2021-3560 的 bash 漏洞利用 ，该漏洞是 polkit 中的一个本地权限提升漏洞，影响许多现代 Linux 发行版。 !!!!!! 测试中可能导致系统不稳定 !!!!! 💥 漏洞摘要 该漏洞由 Kevin Backhouse 发现，非特权用户可通过 dbus 接口与 polkit 授权检查进行竞争，从而创建具有管理员权限的帐户。 受影响软件包 ：polkit = 0.119 CVE 编号 ：CVE-2021-3560 影...

glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive

A flaw was found in GLib. The D-Bus client-side implementation of the DBUSCOOKIESHA1 SASL authentication mechanism does not validate the cookiecontext parameter received from the server. A malicious D-Bus server can supply a cookiecontext containing path traversal sequences, causing the client to...

RHSA-2026:61355 Red Hat Security Advisory: dbus-broker security update

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RHSA-2026:61340 Red Hat Security Advisory: dbus-broker security update

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RLSA-2026:61355 Moderate: dbus-broker security update

dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, while keeping compatibility to the D-Bus reference implementation. It is exclusively written for Linux systems, and makes use of many modern features...

dbus-broker security update

An update is available for dbus-broker. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list dbus-broker is an implementation of a message bus as defined by the D-Bus...

Moderate: Red Hat Security Advisory: dbus-broker security update

An update for dbus-broker is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fro...

dbus-broker: dbus-broker: session bus denial of service via EMFILE during peer setup

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup notably SOPEERPIDFD are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and den...

dbus-broker: dbus-broker: session bus denial of service via EMFILE during peer setup

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup notably SOPEERPIDFD are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and den...

Moderate: Red Hat Security Advisory: dbus-broker security update

An update for dbus-broker is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability fr...

RHEL 10 : dbus-broker (RHSA-2026:61340)

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:61340 advisory. dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability,...

RHEL 9 : dbus-broker (RHSA-2026:61355)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:61355 advisory. dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, whi...

ALSA-2026:61340 Moderate: dbus-broker security update

dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, while keeping compatibility to the D-Bus reference implementation. It is exclusively written for Linux systems, and makes use of many modern features...

ALSA-2026:61355 Moderate: dbus-broker security update

dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, while keeping compatibility to the D-Bus reference implementation. It is exclusively written for Linux systems, and makes use of many modern features...