Debian Security Advisory
DLA-2110-1 netty-3.9 -- LTS security update
- Date Reported:
- 19 Feb 2020
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 746639, Bug 941266, Bug 950966, Bug 950967.
In Mitre's CVE dictionary: CVE-2014-0193, CVE-2014-3488, CVE-2019-16869, CVE-2019-20444, CVE-2019-20445, CVE-2020-7238.
- More information:
Several vulnerabilities were discovered in Netty, a Java NIO client/server socket framework:
WebSocket08FrameDecoder allows remote attackers to cause a denial of service (memory consumption) via a TextWebSocketFrame followed by a long stream of ContinuationWebSocketFrames.
The SslHandler allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a crafted SSLv2Hello message.
Netty mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
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 8
Jessie, these problems have been fixed in version 3.9.0.Final-1+deb8u1.
We recommend that you upgrade your netty-3.9 packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS