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CVE details

CVE-2021-37137

The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory usage as well. This vulnerability can be triggered by supplying malicious input that decompresses to a very big size (via a network stream or a file) or by sending a huge skippable chunk.

Score
7.5 high
Published
2021-10-19
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
java/nettynetty4.1.53_2unaddressedglewis@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>netty</name>
	<range><lt>4.1.68</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>The Snappy frame decoder function doesn't restrict the chunk length
	which may lead to excessive memory usage. Beside this it also may
	buffer reserved skippable chunks until the whole chunk was received
	which may lead to excessive memory usage as well. This vulnerability
	can be triggered by supplying malicious input that decompresses to a
	very big size (via a network stream or a file) or by sending a huge
	skippable chunk.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2021-37137</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2021-37137</url>
    </references>
    <dates>
      <discovery>2021-10-19</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>