opencontainers runc contains procfs race condition with a shared volume mount

Impact By crafting a malicious root filesystem with /proc being a symlink to a directory which was inside a volume shared with another running container, an attacker in control of both containers can trick runc into not correctly configuring the container's security labels and not correctly maski...

DEBIAN-CVE-2021-30465

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition...

CVE-2021-30465

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition...

CVE-2021-30465

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition...

Fedora 安全漏洞

Fedora is a set of Linux operating systems from the Fedora community. A security vulnerability exists in Fedora's Mounting /proc filesystem, which can be exploited by an attacker to bypass the chroot environment and gain write access to files...

PT-2025-48736

Name of the Vulnerable Software and Affected Versions SingularityCE versions prior to 4.3.5 SingularityPRO versions prior to 4.1.11 and 4.3.5 Description SingularityCE and SingularityPRO are open source container platforms. If a user depends on LSM restrictions to prevent harmful actions, an...

GHSA-C3XM-PVG7-GH7R mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

Summary runc 1.0.0-rc94 and earlier are vulnerable to a symlink exchange attack whereby an attacker can request a seemingly-innocuous container configuration that actually results in the host filesystem being bind-mounted into the container allowing for a container escape. CVE-2021-30465 has been...

mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

Summary runc 1.0.0-rc94 and earlier are vulnerable to a symlink exchange attack whereby an attacker can request a seemingly-innocuous container configuration that actually results in the host filesystem being bind-mounted into the container allowing for a container escape. CVE-2021-30465 has been...

OESA-2021-1193 cifs-utils security update

The in-kernel CIFS filesystem is generally the preferred method for mounting SMB/CIFS shares on Linux. Security Fixes: A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest...

Ubuntu: Security Advisory (USN-4960-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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-4960-1 runc vulnerability

Etienne Champetier discovered that runC incorrectly checked mount targets. An attacker with a malicious container image could possibly mount the host filesystem into the container and escalate privileges...

UBUNTU-CVE-2021-30465

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition...

A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity.

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Mount Locker Ransomware Aggressively Changes Up Tactics

The Mount Locker ransomware has shaken things up in recent campaigns with more sophisticated scripting and anti-prevention features, according to researchers. And, the change in tactics appears to coincide with a rebranding for the malware into “AstroLocker.” According to researchers, Mount Locke...

AZL-6354 CVE-2021-20208 affecting package cifs-utils for versions less than 6.8-6

A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity...

UBUNTU-CVE-2021-20208

A flaw was found in cifs-utils in versions before 6.13. A user when mounting a krb5 CIFS file system from within a container can use Kerberos credentials of the host. The highest threat from this vulnerability is to data confidentiality and integrity...

SUSE: Security Advisory (SUSE-SU-2018:3767-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE: Security Advisory (SUSE-SU-2018:2071-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

CVE-2021-3493

The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow...

GO-2021-0085 Authorization bypass in github.com/opencontainers/runc

AppArmor restrictions may be bypassed due to improper validation of mount targets, allowing a malicious image to mount volumes over e.g. /proc...