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Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19

Moderate severity GitHub Reviewed Published May 4, 2021 in vaadin/flow • Updated Jan 9, 2023

Package

maven com.vaadin:flow-server (Maven)

Affected versions

>= 2.0.9, <= 2.5.2
>= 3.0.0, <= 6.0.5

Patched versions

2.5.3
6.0.6

Description

Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0 through 6.0.5 (Vaadin 19.0.0 through 19.0.4) allows local users to inject malicious code into frontend resources during application rebuilds.

References

@fluorumlabs fluorumlabs published to vaadin/flow May 4, 2021
Reviewed May 4, 2021
Published to the GitHub Advisory Database May 6, 2021
Last updated Jan 9, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-c57f-4vp2-jqhm

Source code

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