Debian Security Advisory

DSA-5558-1 netty -- security update

Date Reported:
18 Nov 2023
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 1038947, Bug 1054234.
In Mitre's CVE dictionary: CVE-2023-34462, CVE-2023-44487.
More information:

Two security vulnerabilities have been discovered in Netty, a Java NIO client/server socket framework.

  • CVE-2023-34462

    It might be possible for a remote peer to send a client hello packet during a TLS handshake which lead the server to buffer up to 16 MB of data per connection. This could lead to a OutOfMemoryError and so result in a denial of service.

  • CVE-2023-44487

    The HTTP/2 protocol allowed a denial of service (server resource consumption) because request cancellation can reset many streams quickly. This problem is also known as Rapid Reset Attack.

For the oldstable distribution (bullseye), these problems have been fixed in version 1:4.1.48-4+deb11u2.

For the stable distribution (bookworm), these problems have been fixed in version 1:4.1.48-7+deb12u1.

We recommend that you upgrade your netty packages.

For the detailed security status of netty please refer to its security tracker page at: