Important: python-twisted-web

Issue Overview:

A flaw was found in python-twisted. This vulnerability occurs due to the parsing of illegal constructs in the twisted.web.http module. The illegal constructs include ‘+/-’ in the Content-Length header, ‘\n and \t’ etc. Non-conformant parsing leads to a desync if requests pass through multiple HTTP parsers. This flaw allows a remote attacker to perform an HTTP request smuggling attack. (CVE-2022-24801)

Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host header does not match a configured host twisted.web.vhost.NameVirtualHost will return a NoResource resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds. (CVE-2022-39348)

Affected Packages:

python-twisted-web

Issue Correction:
Run yum update python-twisted-web to update your system.

New Packages:

i686:  
    python26-twisted-web-8.2.0-6.8.amzn1.i686  
    python27-twisted-web-8.2.0-6.8.amzn1.i686  
  
src:  
    python-twisted-web-8.2.0-6.8.amzn1.src  
  
x86_64:  
    python26-twisted-web-8.2.0-6.8.amzn1.x86_64  
    python27-twisted-web-8.2.0-6.8.amzn1.x86_64  

Additional References

Red Hat: CVE-2022-24801, CVE-2022-39348

Mitre: CVE-2022-24801, CVE-2022-39348