CVE-2020-27216

Published: 23 October 2020

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.

Priority

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package	Release	Status
jetty Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
jetty8 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
jetty9 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	groovy	Ignored (end of life)
	hirsute	Not vulnerable (9.4.33-1)
	impish	Not vulnerable (9.4.33-1)
	jammy	Not vulnerable (9.4.33-1)
	kinetic	Not vulnerable (9.4.33-1)
	lunar	Not vulnerable (9.4.33-1)
	mantic	Not vulnerable (9.4.33-1)
	noble	Not vulnerable (9.4.33-1)
	trusty	Does not exist
	upstream	Released (9.4.33-1)
	xenial	Needs triage

Severity score breakdown

Parameter	Value
Base score	7.0
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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