SUSE: Security Advisory (SUSE-SU-2020:3507-1)

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...

h1-ctf: CCC H1 June 2021 CTF Writeup

CTF Summary This was my first H1 CTF and I was excited to work with several others to collaborate on the CTF and find the flag. I'll write up the solution process and vulnerabilities involved in the solution: Knowledge basic of S3 operations XML External Entities and Local File Exfiltration SQL...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impac...

Authorization Bypass

github.com/cilium/cilium is vulnerable to authorization bypass. Under certain conditions, ICMP Echo Request sent to a Cilium endpoint from an actor may bypass a network policy which disallows access from the actor to the endpoint, but allows from the endpoint to the actor...

What is Ping of Death Assault?

Ping of death is a strategy for DoS Denial of Service assault. It’s an attack-type that objectifies the ICMP Internet Control Message Protocol and the TCP Transmission Control Protocol, and is quite possibly the most undermining of all ICMP attacks. The ping of death attack is otherwise called a...

GHSA-C66W-HQ56-4Q97 Network policy may be bypassed by some ICMP Echo Requests

Impact Under certain conditions, ICMP Echo Request sent to a Cilium endpoint from an actor may bypass a network policy which disallows access from the actor to the endpoint, but allows from the endpoint to the actor. This does NOT apply to UDP and TCP traffic. The actor is either a pod or a clust...

Network policy may be bypassed by some ICMP Echo Requests

Impact Under certain conditions, ICMP Echo Request sent to a Cilium endpoint from an actor may bypass a network policy which disallows access from the actor to the endpoint, but allows from the endpoint to the actor. This does NOT apply to UDP and TCP traffic. The actor is either a pod or a clust...

Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 7.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

New Pingback Malware Using ICMP Tunneling to Evade C&C Detection

Researchers on Tuesday disclosed a novel malware that uses a variety of tricks to stay under the radar and evade detection, while stealthily capable of executing arbitrary commands on infected systems. Called 'Pingback,' the Windows malware leverages Internet Control Message Protocol ICMP tunneli...

Designing sockfuzzer, a network syscall fuzzer for XNU

Posted by Ned Williamson, Project Zero Introduction When I started my 20% project – an initiative where employees are allocated twenty-percent of their paid work time to pursue personal projects – with Project Zero, I wanted to see if I could apply the techniques I had learned fuzzing Chrome to...

Cisco NX-OS Software ICMP Version 6 Memory Leak DoS (cisco-sa-fxos-nxos-icmpv6-dos-YD55jVCq)

A denial of service DoS vulnerability exists in Cisco NX-OS Software due to improper error handling when an IPv6-configured interface receives a specific type of ICMPv6 packet. An unauthenticated, remote attacker can exploit this issue, via a crafted ICMPv6 packet, to cause a slow system memory...

SUSE: Security Advisory (SUSE-SU-2020:3326-1)

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...

SUSE: Security Advisory (SUSE-SU-2019:1851-1)

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...

ASB-A-174737972

In icmpglobalallow of icmp.c, there is a possible disclosure of UDP source ports due to a side channel information disclosure. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation...

Cisco IOS XR Software Enf Broker DoS (cisco-sa-iosxr-dos-WwDdghs2)

According to its self-reported version, IOS-XR is affected by multiple denial of service vulnerabilities: - A denial of service vulnerability exists in Cisco IOS XR due to a logic error that occurs when an affected device processes Telnet protocol packets. An unauthenticated, remote attacker can...

CentOS: Security Advisory for bpftool (CESA-2021:0856)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

CentOS 7 : kernel (RHSA-2021:0856)

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0856 advisory. - In the Linux kernel before 5.3.9, there are multiple out-of-bounds write bugs that can be caused by a malicious USB device in the Linux kernel HID...

RHEL 7 : kernel-rt (RHSA-2021:0857)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0857 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirement...

RHEL 7 : kernel (RHSA-2021:0856)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0856 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Local buffer overflow in...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...