#dos

Red Hat Security Advisory 2024-3426-03 - An update for the varnish:6 module is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2024-3417-03 - An update for mod_http2 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Issues addressed include a denial of service vulnerability.

Minder is vulnerable to a denial-of-service (DoS) attack which could allow an attacker to crash the Minder server and deny other users access to it. The root cause of the vulnerability is that Minders sigstore verifier reads an untrusted response entirely into memory without enforcing a limit on the response body. An attacker can exploit this by making Minder make a request to an attacker-controlled endpoint which returns a response with a large body which will crash the Minder server. Specifically, the point of failure is where Minder parses the response from the GitHub attestations endpoint in `getAttestationReply`. Here, Minder makes a request to the `orgs/$owner/attestations/$checksumref` GitHub endpoint (line 285) and then parses the response into the `AttestationReply` (line 295): https://github.com/stacklok/minder/blob/daccbc12e364e2d407d56b87a13f7bb24cbdb074/internal/verifier/sigstore/container/container.go#L271-L300 The way Minder parses the response on line 295 makes it p...

Eclipse ThreadX versions prior to 6.4.0 suffers from a missing array size check causing a memory overwrite, missing parameter checks leading to integer wraparound, under allocations, heap buffer overflows, and more.

Ubuntu Security Notice 6791-1 - It was discovered that Unbound could take part in a denial of service amplification attack known as DNSBomb. This update introduces certain resource limits to make the impact from Unbound significantly lower.

Ubuntu Security Notice 6788-1 - Several security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Ubuntu Security Notice 6673-3 - USN-6673-1 provided a security update for python-cryptography. This update provides the corresponding update for Ubuntu 24.04 LTS. It was discovered that python-cryptography incorrectly handled memory operations when processing mismatched PKCS#12 keys. A remote attacker could possibly use this issue to cause python-cryptography to crash, leading to a denial of service. This issue only affected Ubuntu 23.10.

### Summary The next ruby code is vulnerable to denial of service due to the fact that the user controlled data `profiler_runs` was not contrained to any limitation. Which would lead to allocating resources on the server side with no limitation (CWE-770). ```ruby runs = (request.params['profiler_runs'] || @times).to_i result = @profile.profile do runs.times { @app.call(env) } end ``` An exploit as such `curl --fail "http://127.0.0.1:9292/?profiler_runs=9999999999&profile=process_time"` may cause resource exhaution by a remotely controlled value. ### PoC Herein the `config.ru` file: ```ruby require 'rack' require 'rack/contrib' use Rack::Profiler # if ENV['RACK_ENV'] == 'development' # Define a Rack application app = lambda do |env| # Your application logic goes here [200, {}, ["Hello World"]] end # Run the Rack application run app ``` A Dockerfile: ```Dockerfile # Use the official Ruby image as a base FROM ruby:latest # Set the working...

A possible denial of service attack vector has been identified in the dev/build system controller. dev/build now has its own URL token, similar to flushtoken, to ensure users are authenticated when running dev/build outside of dev environments.

The threat actors behind the CatDDoS malware botnet have exploited over 80 known security flaws in various software over the past three months to infiltrate vulnerable devices and co-opt them into a botnet for conducting distributed denial-of-service (DDoS) attacks. "CatDDoS-related gangs' samples have used a large number of known vulnerabilities to deliver samples," the QiAnXin XLab team