THREATPORT/VULNERABILITY/CVE-2020-27216
HIGH SEVERITY

CVE-2020-27216

Jetty vulnerability

CVSS
7.0
EPSS
4.4%
EPSS pct
90th
Exploited
No known
In Eclipse Jetty versions 1.0 thru 9.4.32.v20200930, 10.0.0.alpha1 thru 10.0.0.beta2, and 11.0.0.alpha1 thru 11.0.0.beta2O, on Unix like systems, the system's temporary directory is shared between all users on that system. A collocated user can observe the process of creating a temporary sub directory in the shared temporary directory and race to complete the creation of the temporary subdirectory. If the attacker wins the race then they will have read and write permission to the subdirectory used to unpack web applications, including their WEB-INF/lib jar files and JSP files. If any code is ever executed out of this temporary directory, this can lead to a local privilege escalation vulnerability.
Affected vendor
Eclipse
Affected product
Jetty
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2020-10-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, high attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2020-27216

  • Confirm whether Eclipse Jetty is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-27216.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-27216

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-27216 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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