Vulnerability Name:

CVE-2021-4356 (CCN-259897)

Assigned:2023-06-07
Published:2023-06-07
Updated:2023-06-13
Summary:Frontend File Manager Plugin for WordPress could allow a remote attacker to obtain sensitive information, caused by lacking authentication protections, and capability checks, and sanitization, all on the wpfm_file_meta_update AJAX action. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to obtain sensitive information from files and use this information to launch further attacks against the affected system.
CVSS v3 Severity:9.0 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
7.8 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.0 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
7.8 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.6 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-4356

Source: XF
Type: UNKNOWN
wp-cve20214356-sec-bypass(259897)

Source: CCN
Type: WordPress Plugins Directory
Frontend File Manager | WordPress

Source: CCN
Type: Wordfence Web site
Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File Download

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:wordpress:wordpress:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
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