|Related CVE||CVE-2019-20444 CVE-2019-20445 CVE-2020-7238|
Several vulnerabilities were discovered in the HTTP server provided by Netty, a Java NIO client/server socket framework:
HttpObjectDecoder.java allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an “invalid fold.”
HttpObjectDecoder.java allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
Netty allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header.
For Debian 7 Wheezy, these problems have been fixed in version 3.2.6.Final-2+deb7u2.
We recommend that you upgrade your netty packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/