CVE-2023-1998

CVE-2023-1998 affects the Linux kernel. Root cause: when using legacy IBRS, the IBRS bit is cleared on returning to userspace, disabling implicit STIBP and leaving some spectre-BTI protections ineffective; attackers on a local machine could exploit cross-thread branch target injection despite mit...

CVE-2023-1998

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to...

CVE-2023-1998 Spectre v2 SMT mitigations problem in Linux kernel

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to...

Linux Kernel 6.2 - Userspace Processes To Enable Mitigation

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

Fedora: Security Advisory for polkit (FEDORA-2023-41bdb7dba8)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 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...

[SECURITY] Fedora 38 Update: polkit-122-3.fc38.1

polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes...

[SECURITY] Fedora 37 Update: polkit-121-4.fc37.2

polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes...

UBUNTU-CVE-2023-26553

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd...

selinux-policy bug fix and enhancement update

An update is available for selinux-policy. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The selinux-policy packages contain the rules that govern how confined...

"It's The Service Accounts, Stupid": Why Do PAM Deployments Take (almost) Forever To Complete?

Privileged Access Management PAM solutions are regarded as the common practice to prevent identity threats to administrative accounts. In theory, the PAM concept makes absolute sense: place admin credentials in a vault, rotate their passwords, and closely monitor their sessions. However, the hars...

Understanding metrics to measure SOC effectiveness

The security operations center SOC plays a critical role in protecting an organizations assets and reputation by identifying, analyzing, and responding to cyberthreats in a timely and effective manner. Additionally, SOCs also help to improve overall security posture by providing add-on services...

Developing an incident response playbook

An incident response playbook is a predefined set of actions to address a specific security incident such as malware infection, violation of security policies, DDoS attack, etc. Its main goal is to enable a large enterprise security team to respond to cyberattacks in a timely and effective manner...

CVE-2023-27578 Galaxy vulnerable to unauthorized modification of pages/visualizations due to insufficient permission check

Galaxy is an open-source platform for data analysis. All supported versions of Galaxy are affected prior to 22.01, 22.05, and 23.0 are affected by an insufficient permission check. Unsupported versions are likely affected as far back as the functionality of Visualizations/Pages exists. Due to thi...

New DotRunpeX Malware Delivers Multiple Malware Families via Malicious Ads

A new piece of malware dubbed dotRunpeX is being used to distribute numerous known malware families such as Agent Tesla, Ave Maria, BitRAT, FormBook, LokiBot, NetWire, Raccoon Stealer, RedLine Stealer, Remcos, Rhadamanthys, and Vidarhttps://thehackernews.com/2023/01/t...

The vulnerability of the AMD KVM subsystem for supporting embedded virtualization in Linux kernel allows a hacker to induce a service failure.

The vulnerability of the AMD KVM subsystem for supporting embedded virtualization in Linux operating systems’ kernels is related to improper handling of embedded termination processes. Exploiting this vulnerability can allow attackers to cause service failures...

CVE-2023-22757

There are buffer overflow vulnerabilities in multiple underlying operating system processes that could lead to unauthenticated remote code execution by sending specially crafted packets via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to execute...

CVE-2023-22756

There are buffer overflow vulnerabilities in multiple underlying operating system processes that could lead to unauthenticated remote code execution by sending specially crafted packets via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to execute...

CVE-2023-22756

There are buffer overflow vulnerabilities in multiple underlying operating system processes that could lead to unauthenticated remote code execution by sending specially crafted packets via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to execute...

CVE-2023-22754

There are buffer overflow vulnerabilities in multiple underlying operating system processes that could lead to unauthenticated remote code execution by sending specially crafted packets via the PAPI protocol. Successful exploitation of these vulnerabilities result in the ability to execute...