Rapid7 Vulnerability & Exploit Database

FreeBSD: VID-4DA51989-5A8B-4EB9-B442-46D94EC0802D (CVE-2023-30847): h2o -- Malformed HTTP/1.1 causes Out-of-Memory Denial of Service

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

FreeBSD: VID-4DA51989-5A8B-4EB9-B442-46D94EC0802D (CVE-2023-30847): h2o -- Malformed HTTP/1.1 causes Out-of-Memory Denial of Service

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/27/2023
Created
05/05/2023
Added
05/01/2023
Modified
05/11/2023

Description

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.

Solution(s)

  • freebsd-upgrade-package-h2o
  • freebsd-upgrade-package-h2o-devel

References

  • CVE-2023-30847

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;