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Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/io.netty/netty-all/4.0.43.Final/9781746a179070e886e1fb4b1971a6bbf02061a4/netty-all-4.0.43.Final.jar
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.
CVE-2023-34462 - Medium Severity Vulnerability
Vulnerable Library - netty-all-4.0.43.Final.jar
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /build.gradle
Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/io.netty/netty-all/4.0.43.Final/9781746a179070e886e1fb4b1971a6bbf02061a4/netty-all-4.0.43.Final.jar
Dependency Hierarchy:
Found in HEAD commit: b23ac4a35a28378635d7eef881077d376557bfc5
Found in base branch: master
Vulnerability Details
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 theSniHandler
to allocate 16MB of heap. TheSniHandler
class is a handler that waits for the TLS handshake to configure aSslHandler
according to the indicated server name by theClientHello
record. For this matter it allocates aByteBuf
using the value defined in theClientHello
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 theSslClientHelloHandler
. This vulnerability has been fixed in version 4.1.94.Final.Publish Date: 2023-06-22
URL: CVE-2023-34462
CVSS 3 Score Details (6.5)
Base Score Metrics:
Suggested Fix
Type: Upgrade version
Origin: GHSA-6mjq-h674-j845
Release Date: 2023-06-22
Fix Resolution (io.netty:netty-all): 4.1.94.Final
Direct dependency fix Resolution (org.apache.spark:spark-sql_2.11): 2.3.0
⛑️ Automatic Remediation will be attempted for this issue.
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