USN-7469-4: H2O vulnerability

30 April 2025

H2O could be made to crash if it received specially crafted network traffic.

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Releases

Packages

  • h2o - an optimized HTTP server with support for HTTP/1.x, HTTP/2, and HTTP/3

Details

USN-7469-1 fixed a vulnerability in Apache Traffic Server. This update
provides the corresponding updates for H2O.

Original advisory details:

It was discovered that Apache Traffic Server exhibited poor server
resource management in its HTTP/2 protocol. An attacker could possibly
use this issue to cause Apache Traffic Server to crash, resulting in
a denial of service.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04

After a standard system update you need to restart H2O to make all the
necessary changes.

References

Related notices

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