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Ubuntu 23.10: 6505-2 Severe: libxml2 Memory Leak Vulnerability

ubuntu
Calendar Grey November 22, 2023
Dist Ubuntu Esm H88
Possible service interruption due to nghttp2 resource usage impacting Ubuntu distributions. Guidance for updates included.
nghttp2 could be made to consume resources if it received specially crafted network traffic.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - Ubuntu 23.04 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: nghttp2 could be made to consume resources if it received specially crafted network traffic. Software Description: - nghttp2: HTTP/2 C Library and tools Details: 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.

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu resource consumption nghttp2

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: libnghttp2-14 1.55.1-1ubuntu0.1 nghttp2 1.55.1-1ubuntu0.1 nghttp2-client 1.55.1-1ubuntu0.1 nghttp2-proxy 1.55.1-1ubuntu0.1 nghttp2-server 1.55.1-1ubuntu0.1 Ubuntu 23.04: libnghttp2-14 1.52.0-1ubuntu0.1 nghttp2 1.52.0-1ubuntu0.1 nghttp2-client 1.52.0-1ubuntu0.1 nghttp2-proxy 1.52.0-1ubuntu0.1 nghttp2-server 1.52.0-1ubuntu0.1 Ubuntu 22.04 LTS: libnghttp2-14 1.43.0-1ubuntu0.1 nghttp2 1.43.0-1ubuntu0.1 nghttp2-client 1.43.0-1ubuntu0.1 nghttp2-proxy 1.43.0-1ubuntu0.1 nghttp2-server 1.43.0-1ubuntu0.1 Ubuntu 20.04 LTS: libnghttp2-14 1.40.0-1ubuntu0.2 nghttp2 1.40.0-1ubuntu0.2 nghttp2-client 1.40.0-1ubuntu0.2 nghttp2-proxy 1.40.0-1ubuntu0.2 nghttp2-server 1.40.0-1ubuntu0.2 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6505-1

CVE-2023-44487

Severity
critical
Lowest
Low
Medium
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Critical

Ubuntu Security Notice USN-6505-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu resource consumption nghttp2

Package Information

https://launchpad.net/ubuntu/+source/nghttp2/1.55.1-1ubuntu0.1 https://launchpad.net/ubuntu/+source/nghttp2/1.52.0-1ubuntu0.1 https://launchpad.net/ubuntu/+source/nghttp2/1.43.0-1ubuntu0.1 https://launchpad.net/ubuntu/+source/nghttp2/1.40.0-1ubuntu0.2

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