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...

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...

Google, Cloudflare, and AWS Disclose Largest DDoS Attack in History

By Deeba Ahmed Google, Cloudflare, and AWS Disclosed Digital History’s Largest Ever DDoS Attack- Courtesy HTTP/2 Zero-day. This is a post from HackRead.com Read the original post: Google, Cloudflare, and AWS Disclose Largest DDoS Attack in History...

PT-2023-6135 · Juniper Networks · Junos

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 20.2R3-S6 on QFX5k Junos OS versions 20.3 prior to 20.3R3-S5 on QFX5k Junos OS versions 20.4 prior to 20.4R3-S5 on QFX5k Junos OS versions 21.1 prior to 21.1R3-S4 on QFX5k Junos OS versions 21.2 prior to 21.2R3-S3 o...

Patch Tuesday, October 2023 Edition

Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS...

io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack

A client might overload the server by issue frequent RST frames. This can cause a massive amount of load on the remote system and so cause a DDOS attack. Impact This is a DDOS attack, any http2 server is affected and so you should update as soon as possible. Patches This is patched in version...

GHSA-XPW8-RCWV-8F8P io.netty:netty-codec-http2 vulnerable to HTTP/2 Rapid Reset Attack

A client might overload the server by issue frequent RST frames. This can cause a massive amount of load on the remote system and so cause a DDOS attack. Impact This is a DDOS attack, any http2 server is affected and so you should update as soon as possible. Patches This is patched in version...

CVE-2023-44487 HTTP/2 Rapid Reset Attack

Today, Amazon Web Services, Cloudflare, and Google, in a coordinated announcement, reveal their experiences mitigating powerful HTTP/2-based DDoS attacks utilizing a zero-day technique referred to as Rapid Reset, documented under the vulnerability identifier CVE-2023-44487. The attack magnitudes...

Microsoft and Adobe Patch Tuesday, October 2023 Security Update Review

Microsoft released its October edition of Patch Tuesday! In this months updates, Microsoft has addressed 105 vulnerabilities in different products, features, and roles. Lets take a look at the updates in detail. Microsoft Patch Tuesday for October 2023 Microsoft has addressed three zero-day...

HTTP/2 Rapid Reset Zero-Day Vulnerability Exploited to Launch Record DDoS Attacks

Amazon Web Services AWS, Cloudflare, and Google on Tuesday said they took steps to mitigate record-breaking distributed denial-of-service DDoS attacks that relied on a novel technique called HTTP/2 Rapid Reset. The layer 7 attacks were detected in late August 2023, the companies said in a...

Protecting Against HTTP/2 Rapid Reset: CVE-2023-44487

Today, Google disclosed a zero-day vulnerability in the HTTP/2 protocol. Imperva collaborated proactively with Google to gain advanced insights into this vulnerability. After a comprehensive inspection of this vulnerability by Imperva’s Product Development and Threat Research teams, we can confir...

HTTP/2 Rapid Reset Vulnerability, CVE-2023-44487

Researchers and vendors have disclosed a denial-of-service DoS vulnerability in HTTP/2 protocollink is external. The vulnerability CVE-2023-44487link is external, known as Rapid Reset, has been exploited in the wild in August 2023 through October 2023. CISA recommends organizations that provide...

Microsoft Response to Distributed Denial of Service (DDoS) Attacks against HTTP/2

Summary Beginning in September 2023, Microsoft was notified by industry partners about a newly identified Distributed Denial-of-Service DDoS attack technique being used in the wild targeting HTTP/2 protocol. This vulnerability CVE-2023-44487 impacts any internet exposed HTTP/2 endpoints. As an...

Citrix Devices Under Attack: NetScaler Flaw Exploited to Capture User Credentials

A recently disclosed critical flaw in Citrix NetScaler ADC and Gateway devices is being exploited by threat actors to conduct a credential harvesting campaign. IBM X-Force, which uncovered the activity last month, said adversaries exploited "CVE-2023-3519 to attack unpatched NetScaler Gateways to...

CVE-2023-44487

creationtimestamp| type| source ---|---|--- 2023-10-10 05:00:00+00:00| seen| https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/ 2023-10-10 05:00:00+00:00| seen|...

HTTP/2 Rapid Reset Attack Vulnerability

HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack DDoS...

Activist Hackers Are Racing Into the Israel-Hamas War—for Both Sides

Since the conflict escalated, hackers have targeted dozens of government websites and media outlets with defacements and DDoS attacks, and attempted to overload targets with junk traffic to bring them down...