Important: dotnet6.0 security update

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET 6.0 to SDK 6.0.123 and Runtime 6.0.23...

Important: .NET 7.0 security update

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET 7.0 to SDK 7.0.112 and Runtime 7.0.12...

Important: go-toolset and golang security and bug fix update

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. The golang packages provide the Go programming language compiler. Security Fixes: golang: net/http, x/net/http2: rapid stream resets can cause excessive work CVE-2023-44487 CVE-2023-39325...

Important: dotnet6.0 security update

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET 6.0 to SDK 6.0.123 and Runtime 6.0.23...

Moderate: nginx:1.20 security update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack Rapid Reset Attack CVE-2023-44487 For more details about the securi...

Important: go-toolset:rhel8 security update

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fixes: golang: net/http, x/net/http2: rapid stream resets can cause excessive work CVE-2023-44487 CVE-2023-39325 HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS...

Moderate: nginx security update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack Rapid Reset Attack CVE-2023-44487 For more details about the securi...

HTTP/2 Zero-Day Exploited for the Most Explosive DDoS Attacks

Threat Level Vulnerability Report For a detailed threat advisory, download the pdf file here Summary A zero-day vulnerability in HTTP/2 has been actively exploited in August, introducing a novel DDoS technique referred as "Rapid Reset". The attack, utilizing CVE-2023-44487, exploits a vulnerabili...

Most Common Types of Cyber Attacks

Pioneering Perspectives on Prevalent Cyber Threats for Beginners Delving into the technology-powered period, it's indispensable to perceive technology as more than just a tool. Indeed, it has become an essential aspect of our day-to-day activities. As we navigate this interconnected realm, it's...

CVE-2023-44181

An Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMP...

Design/Logic Flaw

An Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMP...

CVE-2023-44181 Junos OS: QFX5k: l2 loop in the overlay impacts the stability in a EVPN/VXLAN environment

An Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMP...

CVE-2023-44181

The vulnerability CVE-2023-44181 affects Juniper Networks Junos OS on QFX5k devices, caused by an improperly implemented security check in storm control. When storm control is enabled and ICMPv6 traffic is present, packets can be punted to the ARP queue, creating an L2 loop that can lead to DoS c...

DDoS Attacks Leveraged by Attackers in Israel Conflict

Over the last few years, we’ve observed Distributed Denial of Service DDoS attacks used in many conflicts. In the Russia-Ukraine war, DDoS was used both by government cyber agencies and individual hacktivist groups to disrupt the flow of information and deface sites to promote propaganda. The...

Top resources for Cybersecurity Awareness Month

Welcome to this weeks edition of the Threat Source newsletter. I didnt feel like I wanted to write anything special or witty this week given the current events in Israel and the Gaza Strip, but I will certainly advocate for any assistance readers would like to provide to the various organizations...

ShellBot Uses Hex IPs to Evade Detection in Attacks on Linux SSH Servers

The threat actors behind ShellBot are leveraging IP addresses transformed into their hexadecimal notation to infiltrate poorly managed Linux SSH servers and deploy the DDoS malware. "The overall flow remains the same, but the download URL used by the threat actor to install ShellBot has changed...

HTTP2 Zero-Day Exploited for the Most Explosive DDoS Attacks

Threat Level Vulnerability Report For a detailed threat advisory, download the pdf file here Summary A zero-day vulnerability in HTTP/2 has been actively exploited in August, introducing a novel DDoS technique referred as "Rapid Reset". The attack, utilizing CVE-2023-44487, exploits a vulnerabili...

CVE-2023-44181: Loop with Unreachable Exit Condition

An Improperly Implemented Security Check for Standard vulnerability in storm control of Juniper Networks Junos OS QFX5k devices allows packets to be punted to ARP queue causing a l2 loop resulting in a DDOS violations and DDOS syslog. This issue is triggered when Storm control is enabled and ICMP...

What to know about the HTTP/2 Rapid Reset DDoS attacks

Cisco Talos is actively tracking the novel distributed denial-of-service DDoS attacks cloud services provider Cloudflare disclosed earlier this week. The techniques described in Cloudflares blog post resulted in a record-breaking DDoS attack and could facilitate much larger attacks in the future...

Impact of Rapid Reset and HTTP/2 DoS Vulnerabilities (CVE-2023-44487, CVE-2023-35945)

The Palo Alto Networks Product Security Assurance team is evaluating the recently disclosed denial-of-service DoS vulnerabilities in the HTTP/2 protocol including Rapid Reset CVE-2023-44487 and CVE-2023-35945. If HTTP/2 inspection is enabled in PAN-OS, an ongoing distributed denial-of-service DDo...