USN-4532-1: Netty vulnerabilities
22 September 2020
Several security issues were fixed in Netty.
Releases
Packages
- netty-3.9 - Asynchronous event-driven network application framework
Details
It was discovered that Netty incorrectly handled certain HTTP headers.
By sending an HTTP header with whitespace before the colon, a remote
attacker could possibly use this issue to perform an HTTP request
smuggling attack. (CVE-2019-16869)
It was discovered that Netty incorrectly handled certain HTTP headers.
By sending an HTTP header that lacks a colon, a remote attacker could
possibly use this issue to perform an HTTP request smuggling attack.
(CVE-2019-20444)
It was discovered that Netty incorrectly handled certain HTTP headers.
By sending a Content-Length header accompanied by a second Content-Length
header, or by a Transfer-Encoding header, a remote attacker could possibly
use this issue to perform an HTTP request smuggling attack.
(CVE-2019-20445)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-4600-1: netty-3.9, libnetty-3.9-java
- USN-4600-2: libnetty-java, netty