CVE-2024-21647

CVE-2024-21647 affects the Puma web server for Ruby/Rack. Prior to 6.4.2, Puma could mis-parse chunked Transfer-Encoding bodies, enabling HTTP request smuggling. The vulnerability can cause unbounded resource consumption (CPU, bandwidth), with an impact on availability. Fixed in versions 6.4.2 an...

CVE-2024-21647 HTTP Request/Response Smuggling in puma

Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an...

CVE-2024-21647

Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an...

A week in security (January 1 – January 7)

Last week on Malwarebytes Labs: Police investigate sexual assault on an avatar How AI hallucinations are making bug hunting harder Explained: SMTP smuggling Facebook introduces another way to track you – Link History 23andMe blames "negligent" breach victims, says it’s their own fault Microsoft...

Medium: tomcat9

Issue Overview: Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header siz...

Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2024-471)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2024-471 advisory. Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not...

HTTP Request Smuggling

Overview puma is a simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications. Puma is intended for use in both development and production environments. It's great for highly concurrent Ruby implementations such as Rubinius and JRuby as well as as providing process...

Puma HTTP Request/Response Smuggling vulnerability

Impact Prior to versions 6.4.2 and 5.6.8, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limit the size of chunk extensions. Without this limit, an attacker could cause unbounded resource CPU, network...

Medium: tomcat9

Issue Overview: Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header siz...

Puma Environmental Issues Vulnerability

Puma is a web server for highly concurrent applications from the US-based individual developer Evan Phoenix. An environmental issue vulnerability exists in versions prior to Puma 6.4.2, which stems from a security flaw in puma's parsing of chunked transfer encoders, which allows HTTP requests to ...

Explained: SMTP smuggling

SMTP smuggling is a technique that allows an attacker to send an email from pretty much any address they like. The intended goal is email spoofing—sending emails with false sender addresses. Email spoofing allows criminals to make malicious emails more believable. Let’s take a closer look at what...

Fedora 38 : python-aiohttp / python-pysqueezebox / python-wled (2023-1f06098c71)

The remote Fedora 38 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-1f06098c71 advisory. Security fix for CVE-2023-49081, CVE-2023-49082. Update python-aiohttp to 3.9.1. Patch python-pysqeezebox and python-wled so they do not have an...

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address allowing bypass of an SPF protection mechanism. This occurs because Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do not. To prevent attack variants (by always disallowing <LF> without <CR>) a different solution is required such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23 3.6.13 3.7.9 3.8.4 or 3.9.

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OESA-2024-1006 rubygem-puma security update

A simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications. Security Fixes: Puma is a HTTP 1.1 server for Ruby/Rack applications. Prior to versions 5.5.1 and 4.3.9, using puma with a proxy which forwards HTTP header values which contain the LF character could allow...

[SECURITY] [DLA 3707-1] tomcat9 security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-3707-1 [email protected] https://www.debian.org/lts/security/ Bastien Roucariès January 05, 2024 https://wiki.debian.org/LTS -...

SMTP Smuggling Enabling Spoofed Emails to Evade Authentication Protocols

Summary: A new email spoofing technique called "SMTP Smuggling" lets attackers send emails from fake addresses, bypassing security checks. This trick works by abusing how different servers handle line endings in email messages. The attack could affect millions of email users, so updating your...

openSUSE 15 Security Update : exim (openSUSE-SU-2024:0007-1)

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2024:0007-1 advisory. - A vulnerability was found in Exim and classified as problematic. This issue affects some unknown processing of the component Regex Handler. The...

Security Bulletin: IBM DevOps Release 7.0.0 addresses multiple vulnerabilities.

Summary IBM DevOps Release 7.0.0 addresses multiple vulnerabilities. Vulnerability Details CVEID:CVE-2023-42794 DESCRIPTION: Apache Tomcat is vulnerable to a denial of service, caused by accumulation of temporary files on Windows when a web application opened a stream for an uploaded file but...

Security Bulletin: IBM Integration Bus is vulnerable to HTTP request smuggling and a denial of service due to Apache Tomcat. (CVE-2023-46589, CVE-2023-42794)

Summary IBM Integration Bus is vulnerable to HTTP request smuggling and a denial of service due to Apache Tomcat. Vulnerability Details CVEID:CVE-2023-46589 DESCRIPTION: Apache Tomcat is vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP trailer headers. By sending a...

Security Bulletin: Vulnerability in Apache Tomcat affects App Connect Professional.

Summary App Connect Professional has addressed the following vulnerabilities reported in Apache Tomcat. Vulnerability Details CVEID:CVE-2023-45648 DESCRIPTION: Apache Tomcat is vulnerable to HTTP request smuggling, caused by improper parsing of HTTP trailer headers. By sending a specially crafted...