CVE-2023-39325

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...

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...

[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...

Multi-delegate system opens exploits: vote amplification, collusion, rapid alternation, obscuring bribes.

Lines of code Vulnerability details Impact Allowing votes to be spread across multiple delegates does potentially open up new attack vectors if not handled carefully. Some ways this could potentially be exploited: A delegator spreads their votes thin across many dummy delegates they control to...

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...

GHSA-QPPJ-FM5R-HXR3 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...

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...

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...

AZL-31331 CVE-2023-44487 affecting package multus for versions less than 3.8-12

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-34825 CVE-2023-44487 affecting package kata-containers for versions less than 3.1.0-8

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-35028 CVE-2023-44487 affecting package nginx for versions less than 1.25.4-1

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-31345 CVE-2023-44487 affecting package skopeo for versions less than 1.12.0-4

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-42750 CVE-2023-44487 affecting package ig for versions less than 0.30.0-1

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-31307 CVE-2023-44487 affecting package flannel for versions less than 0.14.0-18

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-31306 CVE-2023-44487 affecting package etcd for versions less than 3.5.6-11

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-31324 CVE-2023-44487 affecting package local-path-provisioner for versions less than 0.0.21-12

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

AZL-34609 CVE-2023-44487 affecting package cmake for versions less than 3.21.4-10

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...