CVE-2021-38346
CVSS V2 Medium 6.5
CVSS V3 High 8.8
Description
The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with "../" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations.
Overview
- CVE ID
- CVE-2021-38346
- Assigner
- security@wordfence.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-10-14T16:15:09
- Last Modified Date
- 2022-07-05T15:03:03
Weakness Enumerations
CPE Configuration (Product)
CPE | Vulnerable | Operator | Version Start | Version End |
---|---|---|---|---|
cpe:2.3:a:brizy:brizy-page_builder:*:*:*:*:*:*:*:* | 1 | OR | 2.3.11 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.9
References
Reference URL | Reference Tags |
---|---|
https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page-builder-plugin-allow-site-takeover/ | Third Party Advisory |
Sources
Source Name | Source URL |
---|---|
NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-38346 |
MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38346 |
History
Created | Old Value | New Value | Data Type | Notes |
---|---|---|---|---|
2022-05-10 06:51:16 | Added to TrackCVE | |||
2022-12-05 12:26:34 | 2021-10-14T16:15Z | 2021-10-14T16:15:09 | CVE Published Date | updated |
2022-12-05 12:26:34 | 2022-07-05T15:03:03 | CVE Modified Date | updated | |
2022-12-05 12:26:34 | Analyzed | Vulnerability Status | updated |