Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

OverlayFS-LPE-Exploit Type...

GameOver(lay) Privilege Escalation and Container Escape

This module exploits the use of unsafe functions in a number of Ubuntu kernels utilizing vulnerable versions of overlayfs. To mitigate CVE-2021-3493 the Linux kernel added a call to vfssetxattr during ovldosetxattr. Due to independent changes to the kernel by the Ubuntu development team...

K54635192: Linux kernel overlayfs vulnerability CVE-2021-3493

Security Advisory Description 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...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS Local Privesc Affected Vers...

New Stealthy Shikitega Malware Targeting Linux Systems and IoT Devices

A new piece of stealthy Linux malware called Shikitega has been uncovered adopting a multi-stage infection chain to compromise endpoints and IoT devices and deposit additional payloads. "An attacker can gain full control of the system, in addition to the cryptocurrency miner that will be executed...

Ubuntu Overlayfs Local Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule '2021 Ubuntu Overlayfs LPE', 'Description' = %q This module exploits a vulnerability in Ubuntu's implementation of overlayfs. The vulnerability is...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

PoC exploit for CVE-2021-3493, a local privilege escalation vulnerability in Ubuntu OverlayFS. The target is the Linux kernel, specifically the overlayfs file system, which did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker coul...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS Local Privesc Affected Vers...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS...

LSN-0076-1: Kernel Live Patch Security Notice

It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges.CVE-2021-3493 Piotr Krysiuk discovered that the BPF JIT compil...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS Local Privesc Affected Vers...

USN-4916-1: Linux kernel vulnerabilities | Cloud Foundry

Severity High Vendor Canonical Ubuntu Versions Affected Canonical Ubuntu 14.04 Canonical Ubuntu 16.04 Description It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

It is an exploit module for CVE-2021-3493, a local privilege escalation vulnerability in Ubuntu OverlayFS. The target is the Linux kernel, specifically the overlayfs file system, which did not properly validate the application of file system capabilities with respect to user namespaces. A local...

USN-4916-2: Linux kernel regression

USN-4916-1 fixed vulnerabilities in the Linux kernel. Unfortunately, the fix for CVE-2021-3493 introduced a memory leak in some situations. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that the overlayfs implementation in the Linu...

Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS Local Privesc Affected Vers...

Ubuntu: Security Advisory (USN-4916-2)

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...

CVE-2021-3493

creationtimestamp| type| source ---|---|--- 2021-04-21 10:26:15+00:00| published-proof-of-concept| https://t.me/pwnwikizhchannel/222 2021-04-26 11:02:21+00:00| seen| https://t.me/CyberSecurityTechnologies/3219 2021-05-08 12:54:09+00:00| published-proof-of-concept|...

ubuntu特权提升漏洞（CVE-2021-3493）

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Exploit for Privilege Context Switching Error in Canonical Ubuntu_Linux

CVE-2021-3493 Ubuntu OverlayFS Local Privesc Affected Vers...

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...