netty-handler SniHandler 16MB allocation
概要
netty-handler SniHandler 16MB allocation
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The SniHandler can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the SniHandler to allocate 16MB of heap. The SniHandler class is a handler that waits for the TLS handshake to configure a SslHandler according to the indicated server name by the ClientHello record. For this matter it allocates a ByteBuf using the value defined in the ClientHello record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the SslClientHelloHandler. This vulnerability has been fixed in version 4.1.94.Final.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2023-34462 netty 修正版: 1:4.1.48-4+deb11u2
- Ubuntu UBUNTU-CVE-2023-34462 netty 修正版: 1:4.1.48-4+deb11u2build0.22.04.1
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- advisory security.netapp.com
- advisory debian.org
- patch github.com