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Improper Resource Shutdown or Release Affecting org.eclipse.jetty:jetty-server package, versions [10.0.0,10.0.10)[11.0.0,11.0.10)

Severity

 Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-JAVA-ORGECLIPSEJETTY-2945458
  • published8 Jul 2022
  • disclosed7 Jul 2022
  • creditUnknown
Report a new vulnerability Found a mistake?

Introduced: 7 Jul 2022

CVE-2022-2191  (opens in a new tab)
CWE-404  (opens in a new tab)

How to fix?

Upgrade org.eclipse.jetty:jetty-server to version 10.0.10, 11.0.10 or higher.

Overview

org.eclipse.jetty:jetty-server is a lightweight highly scalable java based web server and servlet engine.

Affected versions of this package are vulnerable to Improper Resource Shutdown or Release when SslConnection does not release pooled ByteBuffers in case of errors, results in a memory leak.

Workarounds:

Configure explicitly a RetainableByteBufferPool with max[Heap|Direct]Memory to limit the amount of memory that is leaked.

Eventually the pool will be full of "active" entries (the leaked ones) and will provide ByteBuffers that will be GCed normally.

With embedded-jetty:

int maxBucketSize = 1000;
long maxHeapMemory = 128 * 1024L * 1024L; // 128 MB
long maxDirectMemory = 128 * 1024L * 1024L; // 128 MB
RetainableByteBufferPool rbbp = new ArrayRetainableByteBufferPool(0, -1, -1, maxBucketSize, maxHeapMemory, maxDirectMemory);


server.addBean(rbbp); // make sure the ArrayRetainableByteBufferPool is added before the server is started
server.start();

With jetty-home/jetty-base:

Create a ${jetty.base}/etc/retainable-byte-buffer-config.xml

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "https://www.eclipse.org/jetty/configure_10_0.dtd">


<Configure id="Server" class="org.eclipse.jetty.server.Server">
  <Call name="addBean">
    <Arg>
      <New class="org.eclipse.jetty.io.ArrayRetainableByteBufferPool">
        <Arg type="int"><Property name="jetty.byteBufferPool.minCapacity" default="0"/></Arg>
        <Arg type="int"><Property name="jetty.byteBufferPool.factor" default="-1"/></Arg>
        <Arg type="int"><Property name="jetty.byteBufferPool.maxCapacity" default="-1"/></Arg>
        <Arg type="int"><Property name="jetty.byteBufferPool.maxBucketSize" default="1000"/></Arg>
        <Arg type="long"><Property name="jetty.byteBufferPool.maxHeapMemory" default="128000000"/></Arg>
        <Arg type="long"><Property name="jetty.byteBufferPool.maxDirectMemory" default="128000000"/></Arg>
      </New>
    </Arg>
  </Call>
</Configure>

And then reference it in ${jetty.base}/start.d/retainable-byte-buffer-config.ini

etc/retainable-byte-buffer-config.xml

CVSS Scores

version 3.1