CVE-2025-24294

The attack vector is a potential Denial of Service DoS. The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses suc...

Ruby security vulnerabilities

Ruby is a cross-platform, object-oriented, dynamically typed programming language from the individual developer Yukihiro Matsumoto. A security vulnerability exists in Ruby, which stems from insufficient checking of the length of decompressed domain names in DNS packets, which could lead to a...

Ruby WEBrick read_header HTTP Request Smuggling Vulnerability

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Azure Linux 3.0 Security Update: ruby (CVE-2024-43398)

The version of ruby installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-43398 advisory. - REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML tha...

CBL Mariner 2.0 Security Update: ruby / rubygem-rexml (CVE-2024-43398)

The version of ruby / rubygem-rexml installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-43398 advisory. - REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it...

Azure Linux 3.0 Security Update: ruby / rubygem-webrick (CVE-2025-6442)

The version of ruby / rubygem-webrick installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-6442 advisory. - Ruby WEBrick readheader HTTP Request Smuggling Vulnerability. This vulnerability allows remot...

CBL Mariner 2.0 Security Update: ruby / rubygem-webrick (CVE-2025-6442)

The version of ruby / rubygem-webrick installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-6442 advisory. - Ruby WEBrick readheader HTTP Request Smuggling Vulnerability. This vulnerability allows remot...

CVE-2025-6442 affecting package ruby for versions less than 3.3.5-4

CVE-2025-6442 affecting package ruby for versions less than 3.3.5-4. A patched version of the package is available...

CVE-2024-39908 affecting package ruby for versions less than 3.1.7-1

CVE-2024-39908 affecting package ruby for versions less than 3.1.7-1. An upgraded version of the package is available that resolves this issue...

CVE-2024-43398 affecting package ruby for versions less than 3.1.7-1

CVE-2024-43398 affecting package ruby for versions less than 3.1.7-1. An upgraded version of the package is available that resolves this issue...

Possible Denial of Service in resolv gem

A denial of service vulnerability has been discovered in the resolv gem bundled with Ruby. This vulnerability has been assigned the CVE identifier CVE-2025-24294. We recommend upgrading the resolv gem. Details The vulnerability is caused by an insufficient check on the length of a decompressed...

CISA Adds Four Critical Vulnerabilities to KEV Catalog Due to Active Exploitation

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Monday added four security flaws to its Known Exploited Vulnerabilities KEV catalog, citing evidence of active exploitation in the wild. The list of flaws is as follows - CVE-2014-3931 CVSS score: 9.8 - A buffer overflow...

PT-2025-28418

Name of the Vulnerable Software and Affected Versions: Ruby affected versions not specified Description: The issue is related to a possible Denial of Service in the resolv gem. No information is provided about the estimated number of potentially affected devices worldwide or real-world incidents...

Possible Denial of Service in resolv gem

A denial of service vulnerability has been discovered in the resolv gem bundled with Ruby. The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name...

Oracle Linux 8 : ruby:3.3 (ELSA-2025-10217)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-10217 advisory. - Fix Net::IMAP vulnerable to possible DoS by memory exhaustion. CVE-2025-25186 - Fix Denial of Service in CGI::Cookie.parse. CVE-2025-27219 - Fix...

RHSA-2025:10217 Red Hat Security Advisory: ruby:3.3 security update

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ruby:3.3 security update

ruby 3.3.8-4 - Upgrade to Ruby 3.3.8. Resolves: RHEL-68632 - Fix Net::IMAP vulnerable to possible DoS by memory exhaustion. CVE-2025-25186 - Fix Denial of Service in CGI::Cookie.parse. CVE-2025-27219 - Fix userinfo leakage in URIjoin, URImerge and URI+. CVE-2025-27221 rubygem-abrt 0.4.0-1 - Updat...

Moderate: Red Hat Security Advisory: ruby:3.3 security update

An update for the ruby:3.3 module is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

CGI: Denial of Service in CGI::Cookie.parse

A flaw was found in Ruby's CGI gem. Processing specially crafted large cookies with the CGI::Cookie.parse method can cause excessive resource consumption due to a missing limit on the length of the raw cookie value, resulting in a denial of service...

uri: userinfo leakage in URI#join, URI#merge and URI#+

A flaw was found in the URI ruby gem package, where userinfo leakage can occur in the uri gem. The methods URIjoin, URImerge, and URI+ retained userinfo, such as user:password, even after the host is replaced. When generating a URL to a malicious host from a URL containing secret userinfo using...