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...

Microsoft Releases October 2023 Patches for 103 Flaws, Including 2 Active Exploits

Microsoft has released its Patch Tuesday updates for October 2023, addressing a total of 103 flaws in its software, two of which have come under active exploitation in the wild. Of the 103 flaws, 13 are rated Critical and 90 are rated Important in severity. This is apart from 18 security...

[slackware-security] nghttp2

New nghttp2 packages are available for Slackware 15.0 and -current to fix a security issue. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/nghttp2-1.57.0-i586-1slack15.0.txz: Upgraded. This release has a fix to mitigate the HTTP/2 Rapid Reset vulnerability. For more...

Exploit for Uncontrolled Resource Consumption in Ietf Http

This is a proof of concept for a Denial of Service DoS exploit...

.NET Core HTTP2 Rapid Reset Attack DoS Vulnerability - Windows

.NET Core is prone to a denial of service vulnerability. 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 CPE = "cpe:/a:microsoft:asp.netcore";...

CVE-2023-39325

A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by the http2.Server.MaxConcurrentStreams setting, resetting an in-progress request allows the attacker to create a ne...

Debian DSA-5521-1 : tomcat10 - security update

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5521 advisory. - The fix for CVE-2023-24998 was incomplete for Apache Tomcat 11.0.0-M2 to 11.0.0-M4, 10.1.5 to 10.1.7, 9.0.71 to 9.0.73 and 8.5.85 to 8.5.87. If non-default HTTP...

Debian DSA-5522-1 : tomcat9 - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5522 advisory. - Apache Commons FileUpload before 1.5 does not limit the number of request parts to be processed resulting in the possibility of an attacker triggering a DoS wit...

F5 BIG-IP HTTP/2 Denial of Service Vulnerability

F5 BIG-IP is an application delivery platform from F5 that integrates network traffic orchestration, load balancing, intelligent DNS, and remote access policy management. A denial of service vulnerability exists in F5 BIG-IP HTTP/2, which can be exploited by an attacker to cause TMM termination...

Ubuntu: Security Advisory (USN-6427-1)

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...

Apache Tomcat Multiple Vulnerabilities (Oct 2023) - Linux

Apache Tomcat is prone to multiple vulnerabilities. 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 CPE = "cpe:/a:apache:tomcat"; if descriptio...

Slackware Linux 15.0 / current nghttp2 Vulnerability (SSA:2023-284-02)

The version of nghttp2 installed on the remote host is prior to 1.57.0. It is, therefore, affected by a vulnerability as referenced in the SSA:2023-284-02 advisory. - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams...

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...

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...

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...

[SECURITY] [DSA 5521-1] tomcat10 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5521-1 [email protected] https://www.debian.org/security/ Markus Koschany October 10, 2023 https://www.debian.org/security/faq -...

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...

HTTP/2 Stream Cancellation Attack

HTTP/2 Rapid reset attack The HTTP/2 protocol allows clients to indicate to the server that a previous stream should be canceled by sending a RSTSTREAM frame. The protocol does not require the client and server to coordinate the cancellation in any way, the client may do it unilaterally. The clie...

HTTP/2 HPACK integer overflow and buffer allocation

An integer overflow in MetaDataBuilder.checkSize allows for HTTP/2 HPACK header values to exceed their size limit. In MetaDataBuilder.java, the following code determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded: java 291 public void...

CVE-2023-44487

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...