SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-7657

The chunk length parsing was vulnerable to an integer overflow.

CRITICAL 9.8EPSS 14.9%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 14.9%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
14.88% probability · 96th percentile
CISA KEV
Not listed
Weakness
CWE-444, CWE-190
Affected
eclipse/jetty · debian/debian linux · netapp/e-series santricity management · netapp/e-series santricity os controller · netapp/e-series santricity web services · netapp/element software · netapp/element software management node · netapp/hci storage nodes · netapp/oncommand system manager · netapp/oncommand unified manager · netapp/santricity cloud connector · netapp/snap creator framework · netapp/snapcenter · netapp/snapmanager · hp/xp p9000 command view · oracle/rest data services · oracle/retail xstore point of service
Source
emo@eclipse.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.