CVE-2020-24312

WP File Manager <= 6.4 - Unauthenticated Resource Access to Site Backups

2020-08-13 00:00

Strategic Overview

Status: Patched in 6.5
Affected Plugin: File Manager
Affected Version: <= 6.4
CVSS: 7.5High
Weakness type: CWE-552 · Files or Directories Accessible to External Parties
CVE: CVE-2020-24312

At a glance

CVE-2020-24312 is a high-severity Files or Directories Accessible to External Parties vulnerability in the File Manager WordPress plugin, affecting versions <= 6.4. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 6.5; sites on affected versions should update now. Disclosed August 2020.

Vulnerability Overview

mndpsingh287 WP File Manager v6.4 and lower fails to restrict external access to the fm_backups directory with a .htaccess file. This results in the ability for unauthenticated users to browse and download any site backups, which sometimes include full database backups, that the plugin has taken.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-552: Files or Directories Accessible to External Parties

The product makes files or directories accessible to unauthorized actors, even though they should not be.

Remediation

Update to version 6.5, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: File Manager 6.5 closes this, and updating the plugin is the step that ends it.

Firewall
Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-24312 https://www.wordfence.com/threat-intel/vulnerabilities/id/46438bd3-7c4a-4939-ab46-05dc8bbe461f https://nvd.nist.gov/vuln/detail/CVE-2020-24312

Related records

Other vulnerabilities in File Manager

CVSS Vector

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

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