USN-7469-4: H2O vulnerability
Publication date
30 April 2025
Overview
H2O could be made to crash if it received specially crafted network traffic.
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.
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.
Update instructions
After a standard system update you need to restart H2O to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 18.04 bionic | h2o – 2.2.4+dfsg-1ubuntu0.1~esm2 | ||
| libh2o0.13 – 2.2.4+dfsg-1ubuntu0.1~esm2 | |||
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