CVE-2019-25220
Last modified
CVE-2019-25220 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service (daemon crash) via a flood of low-difficulty header chains (aka a "Chain Width Expansion" attack) because a node does not first verify that a presented chain has enough work before committing to store it.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.
Description
Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service (daemon crash) via a flood of low-difficulty header chains (aka a "Chain Width Expansion" attack) because a node does not first verify that a presented chain has enough work before committing to store it.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bitcoin | Bitcoin Core | < 24.0.1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2019-25220?
How severe is CVE-2019-25220?
How do I fix CVE-2019-25220?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2019
- CVE-2019-25215The ARI-Adminer plugin for WordPress is vulnerable to author…7.3
- CVE-2019-25216The Rich Review plugin for WordPress is vulnerable to Stored…6.1
- CVE-2019-25217The SiteGround Optimizer plugin for WordPress is vulnerable …9.8
- CVE-2019-25218The Photo Gallery Slideshow & Masonry Tiled Gallery plugin f…4.9
- CVE-2019-25219Asio C++ Library before 1.13.0 lacks a fallback error code i…7.5
- CVE-2019-2522Vulnerability in the Oracle VM VirtualBox component of Oracl…
- CVE-2019-25221The Responsive Filterable Portfolio plugin for WordPress is …4.9
- CVE-2019-25222The Thumbnail carousel slider plugin for WordPress is vulner…4.9
- CVE-2019-25223The Team Circle Image Slider With Lightbox plugin for WordPr…4.9
- CVE-2019-25224The WP Database Backup plugin for WordPress is vulnerable to…9.8
- CVE-2019-25225`sanitize-html` prior to version 2.0.0-beta is vulnerable to…6.1
- CVE-2019-25226Dongyoung Media DM-AP240T/W wireless access points contain a…8.7
Are you affected by CVE-2019-25220?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST