access.redhat.com Open in urlscan Pro
2a02:26f0:280:5::213:7818  Public Scan

Form analysis
1 forms found in the DOM

Name: topSearchForm — GET /search/browse/search/

<form class="ng-pristine ng-valid topSearchForm" id="topSearchForm" name="topSearchForm" action="/search/browse/search/" method="get" enctype="application/x-www-form-urlencoded">
  <cp-search-autocomplete class="push-bottom" path="/webassets/avalon/j/data.json" pfelement="" type="container"></cp-search-autocomplete>
  <div> Or <a href="/support/cases/#/troubleshoot">troubleshoot an issue</a>. </div>
</form>

Text Content

Skip to navigation Skip to main content


UTILITIES

 * Subscriptions
 * Downloads
 * Containers
 * Support Cases


 * Subscriptions
 * Downloads
 * Containers
 * Support Cases
 * Products & Services
   
   
   PRODUCTS
   
   
   SUPPORT
   
    * Production Support
    * Development Support
    * Product Life Cycles
   
   
   SERVICES
   
    * Consulting
    * Technical Account Management
    * Training & Certifications
   
   
   DOCUMENTATION
   
    * Red Hat Enterprise Linux
    * Red Hat JBoss Enterprise Application Platform
    * Red Hat OpenStack Platform
    * Red Hat OpenShift Container Platform
   
   All Documentation
   
   
   ECOSYSTEM CATALOG
   
    * Red Hat Partner Ecosystem
    * Partner Resources

 * Tools
   
   
   TOOLS
   
    * Troubleshoot a product issue
    * Packages
    * Errata
   
   
   CUSTOMER PORTAL LABS
   
    * Configuration
    * Deployment
    * Security
    * Troubleshoot
   
   All labs
   
   RED HAT INSIGHTS
   
   Increase visibility into IT operations to detect and resolve technical issues
   before they impact your business.
   
   Learn More
   Go to Insights
 * Security
   
   
   RED HAT PRODUCT SECURITY CENTER
   
   Engage with our Red Hat Product Security team, access security updates, and
   ensure your environments are not exposed to any known security
   vulnerabilities.
   
   Product Security Center
   
   
   SECURITY UPDATES
   
    * Security Advisories
    * Red Hat CVE Database
    * Security Labs
   
   Keep your systems secure with Red Hat's specialized responses to security
   vulnerabilities.
   
   View Responses
   
   
   RESOURCES
   
    * Security Blog
    * Security Measurement
    * Severity Ratings
    * Backporting Policies
    * Product Signing (GPG) Keys

 * Community
   
   
   CUSTOMER PORTAL COMMUNITY
   
    * Discussions
    * Private Groups
   
   Community Activity
   
   
   CUSTOMER EVENTS
   
    * Red Hat Summit
   
   
   STORIES
   
    * Red Hat Subscription Value
    * You Asked. We Acted.
    * Open Source Communities

Or troubleshoot an issue.
English


SELECT YOUR LANGUAGE

 * English
 * Français
 * 한국어
 * 日本語
 * 中文 (中国)

Infrastructure and Management
 * Red Hat Enterprise Linux
 * Red Hat Satellite
 * Red Hat Subscription Management
 * Red Hat Insights
 * Red Hat Ansible Automation Platform

Cloud Computing
 * Red Hat OpenShift
 * Red Hat OpenStack Platform
 * Red Hat OpenShift Container Platform
 * Red Hat OpenShift AI
 * Red Hat OpenShift Dedicated
 * Red Hat Advanced Cluster Security for Kubernetes
 * Red Hat Advanced Cluster Management for Kubernetes
 * Red Hat Quay
 * Red Hat OpenShift Dev Spaces
 * Red Hat OpenShift Service on AWS

Storage
 * Red Hat Gluster Storage
 * Red Hat Hyperconverged Infrastructure
 * Red Hat Ceph Storage
 * Red Hat OpenShift Data Foundation

Runtimes
 * Red Hat Runtimes
 * Red Hat JBoss Enterprise Application Platform
 * Red Hat Data Grid
 * Red Hat JBoss Web Server
 * Red Hat build of Keycloak
 * Red Hat support for Spring Boot
 * Red Hat build of Node.js
 * Red Hat build of Quarkus

Integration and Automation
 * Red Hat Application Foundations
 * Red Hat Fuse
 * Red Hat AMQ
 * Red Hat 3scale API Management

All Products
All Red Hat
Back to menu


QUICK LINKS: REDHAT.COM, CUSTOMER PORTAL, RED HAT'S DEVELOPER SITE, RED HAT'S
PARTNER SITE.

 * You are here
   
   
   
   
   RED HAT
   
   Learn about our open source products, services, and company.

 * You are here
   
   
   
   
   RED HAT CUSTOMER PORTAL
   
   Get product support and knowledge from the open source experts.

 * You are here
   
   
   
   
   RED HAT DEVELOPER
   
   Read developer tutorials and download Red Hat software for cloud application
   development.

 * You are here
   
   
   
   
   RED HAT PARTNER CONNECT
   
   Get training, subscriptions, certifications, and more for partners to build,
   sell, and support customer solutions.


PRODUCTS & TOOLS


 * ANSIBLE.COM
   
   Learn about and try our IT automation product.


 * RED HAT ECOSYSTEM CATALOG
   
   Find hardware, software, and cloud providers―and download container
   images―certified to perform with Red Hat technologies.


TRY, BUY, & SELL


 * RED HAT HYBRID CLOUD CONSOLE
   
   Access technical how-tos, tutorials, and learning paths focused on Red Hat’s
   hybrid cloud managed services.


 * RED HAT STORE
   
   Buy select Red Hat products and services online.


 * RED HAT MARKETPLACE
   
   Try, buy, sell, and manage certified enterprise software for container-based
   environments.


EVENTS


 * RED HAT SUMMIT AND ANSIBLEFEST
   
   Register for and learn about our annual open source IT industry event.



We're sorry but cve-details doesn't work properly without JavaScript enabled.
Please enable it to continue.


CVE-2023-50387

Public on

Last Modified: UTC

ImportantImportant ImpactWhat does this mean?
7.5CVSS Score Breakdown


INSIGHTS VULNERABILITY ANALYSIS

View exposed systems


DESCRIPTION

A flaw was found in the bind9 package. Processing specially crafted responses
coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a
Denial of Service in the DNSSEC-validating resolver side.

A flaw was found in the bind9 package. Processing specially crafted responses
coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a
Denial of Service in the DNSSEC-validating resolver side.


MITIGATION

There are no mitigations for this issue that meet Red Hat's secure workaround
criteria. Updating the package to the version containing the fix is recommended.



ADDITIONAL INFORMATION

 * Bugzilla 2263914: bind9: KeyTrap - Extreme CPU consumption in DNSSEC
   validator
 * CWE-400: Uncontrolled Resource Consumption
 * FAQ: Frequently asked questions about CVE-2023-50387




EXTERNAL REFERENCES

 * https://www.cve.org/CVERecord?id=CVE-2023-50387

 * https://nvd.nist.gov/vuln/detail/CVE-2023-50387

 * https://blog.powerdns.com/2024/02/13/powerdns-recursor-4-8-6-4-9-3-5-0-2-released

 * https://kb.isc.org/docs/cve-2023-50387

 * https://www.knot-resolver.cz/2024-02-13-knot-resolver-5.7.1.html




COMMON VULNERABILITY SCORING SYSTEM (CVSS) SCORE DETAILS


IMPORTANT NOTE

CVSS scores for open source components depend on vendor-specific factors (e.g.
version or build chain). Therefore, Red Hat's score and impact rating can be
different from NVD and other vendors. Red Hat remains the authoritative CVE
Naming Authority (CNA) source for its products and services (see Red Hat
classifications).

CVSS v3 Score BreakdownRed HatNVD

CVSS v3 Base Score

7.5

7.5

Attack Vector

Network

Network

Attack Complexity

Low

Low

Privileges Required

None

None

User Interaction

None

None

Scope

Unchanged

Unchanged

Confidentiality Impact

None

None

Integrity Impact

None

None

Availability Impact

High

High




CVSS V3 VECTOR

Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


FREQUENTLY ASKED QUESTIONS


WHY IS RED HAT'S CVSS V3 SCORE OR IMPACT DIFFERENT FROM OTHER VENDORS?

For open source software shipped by multiple vendors, the CVSS base scores may
vary for each vendor's version depending on the version they ship, how they ship
it, the platform, and even how the software is compiled. This makes scoring of
vulnerabilities difficult for third-party vulnerability databases such as NVD
that only provide a single CVSS base score for each vulnerability. Red Hat
scores reflect how a vulnerability affects our products specifically.

For more information, see https://access.redhat.com/solutions/762393.


MY PRODUCT IS LISTED AS "UNDER INVESTIGATION" OR "AFFECTED", WHEN WILL RED HAT
RELEASE A FIX FOR THIS VULNERABILITY?

 * "Under investigation" doesn't necessarily mean that the product is affected
   by this vulnerability. It only means that our Analysis Team is still working
   on determining whether the product is affected and how it is affected.
 * "Affected" means that our Analysis Team has determined that this product is
   affected by this vulnerability and might release a fix to address this in the
   near future.


WHAT CAN I DO IF MY PRODUCT IS LISTED AS "WILL NOT FIX"?

This depends mostly on the Impact of the vulnerability and the Life Cycle phase
in which your product is currently in. Overall, you have the following options:
 * Upgrade to a supported product version that includes a fix for this
   vulnerability (recommended)
 * Apply a mitigation (if one exists)
 * Open a support case to request a prioritization of releasing a fix for this
   vulnerability


WHAT IS A MITIGATION?

A mitigation is an action that can be taken to reduce the impact of a security
vulnerability, without deploying any fixes.


I HAVE A RED HAT PRODUCT BUT IT IS NOT IN THE ABOVE LIST, IS IT AFFECTED?

The listed products were found to include one or more of the components that
this vulnerability affects. These products underwent a thorough evaluation to
determine their affectedness by this vulnerability. Note that layered products
(such as container-based offerings) that consume affected components from any of
the products listed in this table may be affected and are not represented.


WHY IS MY SECURITY SCANNER REPORTING MY PRODUCT AS VULNERABLE TO THIS
VULNERABILITY EVEN THOUGH MY PRODUCT VERSION IS FIXED OR NOT AFFECTED?

In order to maintain code stability and compatibility, Red Hat usually does not
rebase packages to entirely new versions. Instead, we backport fixes and new
features to an older version of the package we distribute. This can result in
some security scanners that only consider the package version to report the
package as vulnerable. To avoid this, we suggest that you use an approved
vulnerability scanner from our Red Hat Vulnerability Scanner Certification
program.

Not sure what something means? Check out our Security Glossary.

This page is generated automatically and has not been checked for errors or
omissions.

For clarification or corrections please contact Red Hat Product Security.

Last Modified: UTC

CVE description copyright © 2021



X (formerly Twitter)


QUICK LINKS

 * Downloads
 * Subscriptions
 * Support Cases
 * Customer Service
 * Product Documentation


HELP

 * Contact Us
 * Customer Portal FAQ
 * Log-in Assistance


SITE INFO

 * Trust Red Hat
 * Browser Support Policy
 * Accessibility
 * Awards and Recognition
 * Colophon


RELATED SITES

 * redhat.com
 * developers.redhat.com
 * connect.redhat.com
 * cloud.redhat.com


SYSTEMS STATUS

 * All systems operational


ABOUT

 * Red Hat Subscription Value
 * About Red Hat
 * Red Hat Jobs




RED HAT LEGAL AND PRIVACY LINKS

 * About Red Hat
 * Jobs
 * Events
 * Locations
 * Contact Red Hat
 * Red Hat Blog
 * Diversity, equity, and inclusion
 * Cool Stuff Store
 * Red Hat Summit

© 2024 Red Hat, Inc.


RED HAT LEGAL AND PRIVACY LINKS

 * Privacy statement
 * Terms of use
 * All policies and guidelines
 * Digital accessibility
   
   
 * Cookie-präferenzen