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Ubuntu 23.10 USN-6754-1 Critical: nghttp2 Denial of Service Vulnerabilities

ubuntu
Calendar Grey April 25, 2024
Dist Ubuntu Esm H88
Numerous vulnerability patches for nghttp2 released in Ubuntu Security Notification USN-6754-1 tackling denial of service concerns.
Several security issues were fixed in nghttp2.

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)

Topics%20covered

Topics Covered

security advisory denial of service DoS Ubuntu update instructions nghttp2

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

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6754-1

Topics%20covered

Topics Covered

security advisory denial of service DoS Ubuntu update instructions nghttp2

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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