CVE-2017-7657
Critical severity vulnerability that affects org.eclipse.jetty:jetty-server
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.
How to fix CVE-2017-7657
To remediate CVE-2017-7657, upgrade the affected package to a fixed version below.
- —upgrade to 9.2.25-1 or later
- —upgrade to 9.2.25.v20180606 or later
Is CVE-2017-7657 being exploited?
Low — EPSS is 4.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 9.2.25-1
- from 0, < 9.2.25.v20180606
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |