Important: mod_http2

Issue Overview:

HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion. (CVE-2024-27316)

Affected Packages:

mod_http2

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update mod_http2 to update your system.

New Packages:

aarch64:  
    mod_http2-1.15.19-1.amzn2.0.2.aarch64  
    mod_http2-debuginfo-1.15.19-1.amzn2.0.2.aarch64  
  
i686:  
    mod_http2-1.15.19-1.amzn2.0.2.i686  
    mod_http2-debuginfo-1.15.19-1.amzn2.0.2.i686  
  
src:  
    mod_http2-1.15.19-1.amzn2.0.2.src  
  
x86_64:  
    mod_http2-1.15.19-1.amzn2.0.2.x86_64  
    mod_http2-debuginfo-1.15.19-1.amzn2.0.2.x86_64  

Additional References

Red Hat: CVE-2024-27316

Mitre: CVE-2024-27316