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Ubuntu Security Notice USN-6754-1

Ubuntu Security Notice USN-6754-1
Posted Apr 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6754-1 - 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. 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.

tags | advisory, remote, web, denial of service
systems | linux, ubuntu
advisories | CVE-2019-9511, CVE-2019-9513, CVE-2023-44487, CVE-2024-28182
SHA-256 | 5cf8f575ba3f618cd1a7ba459257c95bf26180fa995bf1e705ddd3bb811a5c3e

Ubuntu Security Notice USN-6754-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6754-1
April 25, 2024

nghttp2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in nghttp2.

Software Description:
- nghttp2: HTTP/2 C Library and tools

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)

Update instructions:

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

Ubuntu 23.10:
libnghttp2-14 1.55.1-1ubuntu0.2
nghttp2 1.55.1-1ubuntu0.2
nghttp2-client 1.55.1-1ubuntu0.2
nghttp2-proxy 1.55.1-1ubuntu0.2
nghttp2-server 1.55.1-1ubuntu0.2

Ubuntu 22.04 LTS:
libnghttp2-14 1.43.0-1ubuntu0.2
nghttp2 1.43.0-1ubuntu0.2
nghttp2-client 1.43.0-1ubuntu0.2
nghttp2-proxy 1.43.0-1ubuntu0.2
nghttp2-server 1.43.0-1ubuntu0.2

Ubuntu 20.04 LTS:
libnghttp2-14 1.40.0-1ubuntu0.3
nghttp2 1.40.0-1ubuntu0.3
nghttp2-client 1.40.0-1ubuntu0.3
nghttp2-proxy 1.40.0-1ubuntu0.3
nghttp2-server 1.40.0-1ubuntu0.3

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libnghttp2-14 1.30.0-1ubuntu1+esm2
nghttp2 1.30.0-1ubuntu1+esm2
nghttp2-client 1.30.0-1ubuntu1+esm2
nghttp2-proxy 1.30.0-1ubuntu1+esm2
nghttp2-server 1.30.0-1ubuntu1+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libnghttp2-14 1.7.1-1ubuntu0.1~esm2
nghttp2 1.7.1-1ubuntu0.1~esm2
nghttp2-client 1.7.1-1ubuntu0.1~esm2
nghttp2-proxy 1.7.1-1ubuntu0.1~esm2
nghttp2-server 1.7.1-1ubuntu0.1~esm2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6754-1
CVE-2019-9511, CVE-2019-9513, CVE-2023-44487, CVE-2024-28182

Package Information:
https://launchpad.net/ubuntu/+source/nghttp2/1.55.1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/nghttp2/1.43.0-1ubuntu0.2
https://launchpad.net/ubuntu/+source/nghttp2/1.40.0-1ubuntu0.3

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