Skip to content
CVE Tracker
Back

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…

Critical9.8EPSS 14.4%
Published
Updated
Reserved
Assigned by
eclipse

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.

Scores

CVSS scores of CVE-2017-7657, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Critical9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
14.4% · top 3.4% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • The Eclipse Foundation · Eclipse Jetty

    • affected unspecified – ≤ 9.2.0
    • affected 9.3.0 – < unspecified
    • affected unspecified – < 9.3.24
    • affected 9.4.0 – < unspecified
    • affected unspecified – < 9.4.11

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (16)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .