PT-2021-7676 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.10.161 Description: A vulnerability in the io uring subsystem can leak kernel memory information to the user process. The timens install function calls current is single threaded to determine if the current...

Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork (important)

openSUSE Security Update: Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork Announcement ID: openSUSE-SU-2021:0278-1 Rating: important References: 1174075 1176708 1178801 1178969 1180243 1180401 1181730 1181732 Cross-References: CVE-2020-15257 CVE-2021-21284...

CVE-2020-16120

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

AZL-6522 CVE-2020-16120 affecting package kernel for versions less than 5.10.78.1-1

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

CVE-2020-16120

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

Design/Logic Flaw

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

CVE-2020-16120

The CVE-2020-16120 issue concerns Overlayfs in the Linux kernel where permission checks during copy-up were inadequate when used inside a user namespace. It was introduced in kernel 4.19 (ovl: stack file ops) and fixed in kernel 5.8 by patches that verify permissions in ovl_path_open(), switch to...

CVE-2020-16120 Unprivileged overlay + shiftfs read access

Overlayfs did not properly perform permission checking when copying up files in an overlayfs and could be exploited from within a user namespace, if, for example, unprivileged user namespaces were allowed. It was possible to have a file not readable by an unprivileged user to be copied to a...

Privilege Escalation

docker is vulnerable to privilege escalation. The --userns-remap option allows the root user in the remapped namespace, who has access to the host filesystem, to modify files under /var/lib/docker/ and write files with extended privileges...

Vulnerabilities fixed in Docker

Vulnerabilities have been fixed in Docker. A local malicious person can, by exploiting the vulnerability with attribute CVE-2021-21284, gain root privileges from the container on the vulnerable system. To exploit this vulnerability, the Docker daemon must be configured with the --userns-remap...

[ASA-202102-12] docker: multiple issues

Arch Linux Security Advisory ASA-202102-12 ========================================== Severity: Medium Date : 2021-02-06 CVE-ID : CVE-2021-21284 CVE-2021-21285 Package : docker Type : multiple issues Remote : No Link : https://security.archlinux.org/AVG-1528 Summary ======= The package docker...

EulerOS 2.0 SP9 : kata-containers (EulerOS-SA-2021-1245)

According to the version of the kata-containers package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - containerd is an industry-standard container runtime and is available as a daemon for Linux and Windows. In containerd before versions 1.3....

OESA-2021-1011 golang security update

The Go Programming Language.\r\n\r\n Security Fixes:\r\n\r\n The encoding/xml package in Go all versions does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during...

DEBIAN-CVE-2021-21284

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can...

UBUNTU-CVE-2021-21284

In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can...

CVE-2021-21284

CVE-2021-21284 affects Docker’s userns-remap feature. The root user in the remapped namespace can gain privilege escalation to the host’s real root if it has host filesystem access, by modifying files under /var/lib/docker/. Patches were included in Docker releases 20.10.3 and 19.03.15 to prevent...

Docker 路径遍历漏洞

Docker is an open source application container engine from the American company Docker. It supports creating a container lightweight virtual machine and deploying and running applications on Linux systems, as well as automating the installation, deployment and upgrade of applications through...

CVE-2020-5801

An attacker can craft and send an OpenNamespace message to port 4241 with valid session-id that triggers an unhandled exception in CFTLDManager::HandleRequest function in RnaDaSvr.dll, resulting in process termination. Observed in FactoryTalk Linx 6.11. All versions of FactoryTalk Linx are affect...

Linux TIOCSPGRP Broken Locking Exploit

Linux: Broken locking in TIOCSPGRP leads to corrupted tty-pgrp refcount tiocspgrp, the handler for the TIOCSPGRP ioctl, has the following signature: static int tiocspgrpstruct ttystruct tty, struct ttystruct realtty, pidt user p It receives two ttystruct pointers because, for PTY pairs, userspace...

MediaWiki cross-site scripting vulnerability (CNVD-2020-74052)

MediaWiki is a set of free and freely available web-based Wiki engines from the MediaWiki Wikimedia Foundation in the United States. It can be used to deploy in-house knowledge management and content management systems. A cross-site scripting vulnerability exists in MediaWiki before version 1.35....