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elFinder before 2.1.59 contains multiple vulnerabilities leading to RCE

Critical severity GitHub Reviewed Published Jun 13, 2021 in Studio-42/elFinder • Updated Jan 29, 2023

Package

composer studio-42/elfinder (Composer)

Affected versions

< 2.1.59

Patched versions

2.1.59

Description

Impact

We recently fixed several vulnerabilities affect elFinder 2.1.58. These vulnerabilities can allow an attacker to execute arbitrary code and commands on the server hosting the elFinder PHP connector, even with the minimal configuration.

Patches

The issues were addressed in our last release, 2.1.59.

Workarounds

If you can't update to 2.1.59, make sure your connector is not exposed without authentication.

Reference

Further technical details will be disclosed on https://blog.sonarsource.com/tag/security after some time.

For more information

If you have any questions or comments about this advisory, you can contact:
- The original reporters, by sending an email to vulnerability.research@sonarsource.com;
- The maintainers, by opening an issue on this repository.

References

@nao-pon nao-pon published to Studio-42/elFinder Jun 13, 2021
Published by the National Vulnerability Database Jun 14, 2021
Reviewed Jun 15, 2021
Published to the GitHub Advisory Database Jun 16, 2021
Last updated Jan 29, 2023

Severity

Critical

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

97.362%
(100th percentile)

Weaknesses

CVE ID

CVE-2021-32682

GHSA ID

GHSA-wph3-44rj-92pr

Source code

Credits

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