CVE-2021-4234

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack...

Design/Logic Flaw

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack...

CVE-2021-4234

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack...

CVE-2021-4234

OpenVPN Access Server 2.10 and earlier are affected by a vulnerability where the server resends multiple packets in response to a client-sent reset, which the client does not respond to, enabling a limited amplification attack. The issue is documented in CVE-2021-4234 with a HIGH impact on availa...

OpenVPN 安全漏洞

OpenVPN is a software package for creating encrypted tunnels for Virtual Private Networks VPNs from US-based OpenVPN, which uses the OpenSSL library to encrypt data and control information, and allows created VPNs to be authenticated using public keys, electronic certificates, or...

Record breaking HTTPS DDoS attack

Last week, Cloudflare blocked the largest HTTPS DDoS attack on record. The attack amassed some 26 million requests per second rps. The previous record for a HTTPS DDoS attack was 15.3 million rps. The attack targeted an unnamed Cloudflare customer and originated mostly from Cloud Service Provider...

“Downthem” DDoS-for-Hire Boss Gets 2 Years in Prison

A 33-year-old Illinois man was sentenced to two years in prison today following his conviction last year for operating services that allowed paying customers to launch powerful distributed denial-of-service DDoS attacks against hundreds of thousands of Internet users and websites. The user...

GHSA-GPXV-776P-7GC7 Jenkins vulnerable to UDP amplification reflection attack

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier supports two network discovery services UDP multicast/broadcast and DNS multicast by default. The UDP multicast/broadcast service can be used in an amplification reflection attack, as very few bytes sent to the respective endpoint result in much...

Jenkins vulnerable to UDP amplification reflection attack

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier supports two network discovery services UDP multicast/broadcast and DNS multicast by default. The UDP multicast/broadcast service can be used in an amplification reflection attack, as very few bytes sent to the respective endpoint result in much...

Anatomy of a DDoS amplification attack

Amplification attacks are one of the most common distributed denial of service DDoS attack vectors. These attacks are typically categorized as flooding or volumetric attacks, where the attacker succeeds in generating more traffic than the target can process, resulting in exhausting its resources...

Anatomy of a DDoS amplification attack

Amplification attacks are one of the most common distributed denial of service DDoS attack vectors. These attacks are typically categorized as flooding or volumetric attacks, where the attacker succeeds in generating more traffic than the target can process, resulting in exhausting its resources...

CVE-2021-38429 OCI OpenDDS Secure Network Amplification

OCI OpenDDS versions prior to 3.18.1 are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic, which may result in a denial-of-service condition and information exposure...

CVE-2021-38429 OCI OpenDDS Secure Network Amplification

OCI OpenDDS versions prior to 3.18.1 are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic, which may result in a denial-of-service condition and information exposure...

CVE-2021-38425 eProsima Fast DDS Network Amplification

eProsima Fast DDS versions prior to 2.4.0 2269 are susceptible to exploitation when an attacker sends a specially crafted packet to flood a target device with unwanted traffic, which may result in a denial-of-service condition and information exposure...

CVE-2021-38425 eProsima Fast DDS Network Amplification

eProsima Fast DDS versions prior to 2.4.0 2269 are susceptible to exploitation when an attacker sends a specially crafted packet to flood a target device with unwanted traffic, which may result in a denial-of-service condition and information exposure...

CVE-2021-43547 TwinOaks Computing CoreDX DDS Secure Network Amplification

TwinOaks Computing CoreDX DDS versions prior to 5.9.1 are susceptible to exploitation when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure...

CVE-2021-38487 Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro

RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure...

CVE-2021-38487 Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro

RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure...

The “PhoneHome” DDoS Attack — Everything You Need to Know

A vulnerability in enterprise collaboration suite MiCollab by telecommunications company Mitel has been abused for distributed denial-of-service DDoS attacks with record-breaking amplification potential...

Massive DDoS Attack Knocked Israeli Government Websites Offline

A number of websites belonging to the Israeli government were felled in a distributed denial-of-service DDoS attack on Monday, rendering the portals inaccessible for a short period of time. "In the past few hours, a DDoS attack against a communications provider was identified," the Israel Nationa...