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CVE-2019-20445: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

February 21, 2020 (updated August 16, 2023)

HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.

References

  • access.redhat.com/errata/RHSA-2020:0497
  • access.redhat.com/errata/RHSA-2020:0567
  • access.redhat.com/errata/RHSA-2020:0601
  • access.redhat.com/errata/RHSA-2020:0605
  • access.redhat.com/errata/RHSA-2020:0606
  • access.redhat.com/errata/RHSA-2020:0804
  • access.redhat.com/errata/RHSA-2020:0805
  • access.redhat.com/errata/RHSA-2020:0806
  • access.redhat.com/errata/RHSA-2020:0811
  • github.com/advisories/GHSA-p2v9-g2qv-p635
  • github.com/netty/netty/compare/netty-4.1.43.Final...netty-4.1.44.Final
  • github.com/netty/netty/issues/9861
  • github.com/netty/netty/pull/9865
  • lists.apache.org/thread.html/r030beff88aeb6d7a2d6cd21342bd18686153ce6e26a4171d0e035663@%3Cissues.flume.apache.org%3E
  • lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
  • lists.apache.org/thread.html/r1fcccf8bdb3531c28bc9aa605a6a1bea7e68cef6fc12e01faafb2fb5@%3Cissues.zookeeper.apache.org%3E
  • lists.apache.org/thread.html/r205937c85817a911b0c72655c2377e7a2c9322d6ef6ce1b118d34d8d@%3Cdev.geode.apache.org%3E
  • lists.apache.org/thread.html/r2f2989b7815d809ff3fda8ce330f553e5f133505afd04ffbc135f35f@%3Cissues.spark.apache.org%3E
  • lists.apache.org/thread.html/r310d2ce22304d5298ff87f10134f918c87919b452734f9841d95682d@%3Ccommits.zookeeper.apache.org%3E
  • lists.apache.org/thread.html/r36fcf538b28f2029e8b4f6b9a772f3b107913a78f09b095c5b153a62@%3Cissues.zookeeper.apache.org%3E
  • lists.apache.org/thread.html/r46f93de62b1e199f3f9babb18128681677c53493546f532ed88c359d@%3Creviews.spark.apache.org%3E
  • lists.apache.org/thread.html/r4d3f1d3e333d9c2b2f6e6ae8ed8750d4de03410ac294bcd12c7eefa3@%3Ccommits.cassandra.apache.org%3E
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  • lists.apache.org/thread.html/r959474dcf7f88565ed89f6252ca5a274419006cb71348f14764b183d@%3Ccommits.cassandra.apache.org%3E
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  • lists.apache.org/thread.html/rce71d33747010d32d31d90f5d737dae26291d96552f513a266c92fbb@%3Cnotifications.zookeeper.apache.org%3E
  • lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26@%3Ccommits.pulsar.apache.org%3E
  • lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e@%3Cissues.flink.apache.org%3E
  • lists.apache.org/thread.html/rdb69125652311d0c41f6066ff44072a3642cf33a4b5e3c4f9c1ec9c2@%3Ccommits.pulsar.apache.org%3E
  • lists.apache.org/thread.html/re45ee9256d3233c31d78e59ee59c7dc841c7fbd83d0769285b41e948@%3Ccommits.druid.apache.org%3E
  • lists.apache.org/thread.html/rf5b2dfb7401666a19915f8eaef3ba9f5c3386e2066fcd2ae66e16a2f@%3Cdev.flink.apache.org%3E
  • lists.apache.org/thread.html/rfb55f245b08d8a6ec0fb4dc159022227cd22de34c4419c2fbb18802b@%3Cnotifications.zookeeper.apache.org%3E
  • lists.apache.org/thread.html/rff210a24f3a924829790e69eaefa84820902b7b31f17c3bf2def9114@%3Ccommits.druid.apache.org%3E
  • lists.debian.org/debian-lts-announce/2020/02/msg00017.html
  • lists.debian.org/debian-lts-announce/2020/02/msg00018.html
  • lists.debian.org/debian-lts-announce/2020/09/msg00003.html
  • lists.debian.org/debian-lts-announce/2020/09/msg00004.html
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/
  • nvd.nist.gov/vuln/detail/CVE-2019-20445
  • usn.ubuntu.com/4532-1/
  • www.debian.org/security/2021/dsa-4885

Code Behaviors & Features

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Affected versions

All versions before 4.0.0

Fixed versions

  • 4.0.0

Solution

Upgrade to version 4.0.0 or above.

Impact 9.1 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
  • CWE-707: Improper Neutralization

Source file

maven/org.jboss.netty/netty/CVE-2019-20445.yml

Spotted a mistake? Edit the file on GitLab.

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