CVE-2021-42669

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.
Overview
  • CVE ID
  • CVE-2021-42669
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-11-05T13:15:09
  • Last Modified Date
  • 2021-11-29T17:13:34
Weakness Enumerations
CWE URL
CWE-434 http://cwe.mitre.org/data/definitions/434.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:engineers_online_portal_project:engineers_online_portal:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html Product Third Party Advisory
https://github.com/TheHackingRabbi/CVE-2021-42669 Exploit Third Party Advisory
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-42671 Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-42669
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42669
History
Created Old Value New Value Data Type Notes
2022-05-10 06:44:40 Added to TrackCVE
2022-12-05 13:55:30 2021-11-05T13:15Z 2021-11-05T13:15:09 CVE Published Date updated
2022-12-05 13:55:30 2021-11-29T17:13:34 CVE Modified Date updated
2022-12-05 13:55:30 Analyzed Vulnerability Status updated