#linux

Cybersecurity researchers have shed light on a novel attack chain that employs phishing emails to deliver an open-source backdoor called VShell. The "Linux-specific malware infection chain that starts with a spam email with a malicious RAR archive file," Trellix researcher Sagar Bade said in a technical write-up. "The payload isn't hidden inside the file content or a macro, it's encoded directly

A new report from Red Canary reveals a clever Linux malware called DripDropper that exploits a flaw and…

Server-Side Request Forgery (SSRF) in eventmesh-runtime module in WebhookUtil.java on windows\linux\mac os e.g. allows the attacker can abuse functionality on the server to read or update internal resources. Users are recommended to upgrade to version 1.12.0 or use the master branch, which fixes this issue.

The EVE X1 server suffers from an unauthenticated OS command injection vulnerability. This can be exploited to inject and execute arbitrary shell commands through the 'passwd' HTTP POST parameter in /ajax/php/login.php script.

The highly sophisticated post-compromise tool abuses the Linux kernel's io_uring interface to remain hidden from endpoint detection and response systems.

Threat actors are exploiting a nearly two-year-old security flaw in Apache ActiveMQ to gain persistent access to cloud Linux systems and deploy malware called DripDropper. But in an unusual twist, the unknown attackers have been observed patching the exploited vulnerability after securing initial access to prevent further exploitation by other adversaries and evade detection, Red Canary said in

An attacker is breaking into Linux systems via a widely abused 2-year-old vulnerability in Apache ActiveMQ, installing malware and then patching the flaw.

### Summary If `/proc` and `/sys` in the rootfs are symbolic links, they can potentially be exploited to gain access to the host root filesystem. ### Details For security reasons, container creation should be prohibited if `/proc` or `/sys` in the rootfs is a symbolic link. I verified this behavior with `youki`. When `/proc` or `/sys` is a symbolic link, `runc` fails to create the container, whereas `youki` successfully creates it. This is the fix related to this issue in `runc`. * https://github.com/opencontainers/runc/pull/3756 * https://github.com/opencontainers/runc/pull/3773 * https://github.com/opencontainers/runc/blob/main/libcontainer/rootfs_linux.go#L590 * https://github.com/opencontainers/runc/blob/main/tests/integration/mask.bats#L60 ### Impact The following advisory appears to be related to this vulnerability: * https://github.com/advisories/GHSA-vpvm-3wq2-2wvm * https://github.com/advisories/GHSA-fh74-hm69-rqjw

Japan's CERT coordination center (JPCERT/CC) on Thursday revealed it observed incidents that involved the use of a command-and-control (C2) framework called CrossC2, which is designed to extend the functionality of Cobalt Strike to other platforms like Linux and Apple macOS for cross-platform system control. The agency said the activity was detected between September and December 2024, targeting

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.1 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: Third-Party Components in SINEC OS Vulnerabilities: Improper Input Validation, Use After Free, Out-of-bounds Read, Incorrect Check of Function Return Value, Incorrect Comparison, Improper Control of Resource Identifiers ('Resource Injection'), Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), NULL Pointer Dereference, Excessive Platform Resource Consumption within a Loop, Allocation of Resources Without Limits or Throttling, Improper Restriction of Operations within the Bounds of a Memory Buffer, Buffer Copy with...