Skip to content

Possible exposure of information vulnerability

Moderate
Angelmmiguel published GHSA-rmx7-5j3j-m2mf Oct 9, 2023

Package

cargo wws-server (Rust)

Affected versions

< 1.6.0, >= 0.6.0

Patched versions

1.6.1, 1.6.0, 1.5.2, 1.4.1, 1.3.1, 1.2.1, 1.1.2

Description

Impact

Wasm Workers Server offers the possibility to serve static files (assets). To provide this feature, wws uses the convention of the public folder. When this folder is present in your project, wws serves all files inside it.

When the public folder does not exist, the underlying actix-files library fails to open it, captures the "missing folder" error, and defaults to the current path. Under these circumstances, wws starts exposing all the files and folders from the current path, which is an unexpected behavior and may expose files that users did not expect.

Patches

The fix is already released in the following versions:

We recommend to update to the latest version.

Workarounds

If you cannot upgrade to any of those versions, create an empty public folder in your project to fix the issue.

References

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
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
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:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CVE ID

No known CVE

Weaknesses

No CWEs

Credits