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OpenAdvisories
Medium USN-6754-2 1 CVE

nghttp2 vulnerability

Published May 7, 2024 · Updated Apr 22, 2026

Summary

USN-6754-1 fixed vulnerabilities in nghttp2. This update provides the
corresponding update for Ubuntu 24.04 LTS.

Original advisory details:

It was discovered that nghttp2 incorrectly handled the HTTP/2
implementation. A remote attacker could possibly use this issue to cause
nghttp2 to consume resources, leading to a denial of service. This issue
only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-9511,
CVE-2019-9513)

It was discovered that nghttp2 incorrectly handled request cancellation. A
remote attacker could possibly use this issue to cause nghttp2 to consume
resources, leading to a denial of service. This issue only affected Ubuntu
16.04 LTS and Ubuntu 18.04 LTS. (CVE-2023-44487)

It was discovered that nghttp2 could be made to process an unlimited number
of HTTP/2 CONTINUATION frames. A remote attacker could possibly use this
issue to cause nghttp2 to consume resources, leading to a denial of
service. (CVE-2024-28182)

Fixed packages 1

ReleasePackageFixed in
Ubuntu · 24.04 LTS 24.04:LTS nghttp2 1.59.0-1ubuntu0.1

Vulnerabilities 1

  • Medium 5.3
    CVE-2024-28182 EPSS 82%

    Reading unbounded number of HTTP/2 CONTINUATION frames to cause excessive CPU usage

    nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. The nghttp2 library prior to version 1.61.0 keeps reading the unbounded number of HTTP/2 CONTINUATION frames even after a stream is reset to keep HPACK context in sync. This cause…

References

  • report
    https://ubuntu.com/security/CVE-2024-28182