5.3Medium
Broadcom Reactor Netty
CVE-2023-34054
In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition. Specifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.
What this means for your business
- It affects Broadcom Reactor Netty. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Broadcom Reactor Netty, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 5.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Assigned by
- security@vmware.com
Dates
- Published
- 2023-11-28
- Last modified
- 2026-09-04
- Sources
- NVD
Affected products
- Broadcom Reactor Netty- 1.0.39, 1.1.0 - 1.1.13
As listed in the NVD configuration data. Not a statement about your estate.