8.1
HIGH
CVE-2016-8870
Joomla! Users Unauthorized Account Creation
Description

The register method in the UsersModelRegistration class in controllers/user.php in the Users component in Joomla! before 3.6.4, when registration has been disabled, allows remote attackers to create user accounts by leveraging failure to check the Allow User Registration configuration setting.

INFO

Published Date :

Nov. 4, 2016, 9:59 p.m.

Last Modified :

Nov. 7, 2023, 2:36 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2016-8870 has a 12 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-8870 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Joomla joomla\!
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-8870.

URL Resource
http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc Third Party Advisory
http://www.securityfocus.com/bid/93876 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037107
http://www.securitytracker.com/id/1037108 Third Party Advisory VDB Entry
https://blog.sucuri.net/2016/10/details-on-the-privilege-escalation-vulnerability-in-joomla.html
https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html Vendor Advisory
https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf Patch
https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
https://www.exploit-db.com/exploits/40637/ Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
dr4v/exploits

None

Makefile Python Assembly JavaScript PHP Shell

Updated: 1 year, 3 months ago
0 stars 0 fork 0 watcher
Born at : Aug. 1, 2023, 12:44 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
tu3n4nh/OWASP-Testing-Guide-v4-Table-of-Contents

None

Updated: 1 year, 6 months ago
0 stars 0 fork 0 watcher
Born at : May 10, 2023, 1:58 a.m. This repo has been linked 3 different CVEs too.
Profile Photo
jmedeng/suriya73-exploits

None

Makefile Python Assembly JavaScript PHP Shell

Updated: 2 years, 1 month ago
0 stars 0 fork 0 watcher
Born at : Sept. 13, 2022, 3:18 p.m. This repo has been linked 9 different CVEs too.
Profile Photo
anquanscan/sec-tools

None

Updated: 2 months ago
17 stars 5 fork 5 watcher
Born at : July 28, 2022, 3:22 a.m. This repo has been linked 149 different CVEs too.
Profile Photo
dhniroshan/offensive_hacking

None

Python

Updated: 4 years, 5 months ago
0 stars 0 fork 0 watcher
Born at : May 12, 2020, 1:32 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
cved-sources/cve-2016-8870

cve-2016-8870

Dockerfile

Updated: 3 years, 6 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 11, 2019, 9:08 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
shildenbrand/Exploits

None

Makefile Python Assembly JavaScript PHP Shell

Updated: 5 years, 10 months ago
1 stars 0 fork 0 watcher
Born at : Aug. 20, 2018, 8:49 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
R0B1NL1N/E-x-p-l-o-i-t-s

Miscellaneous exploit code http://www.xiphosresearch.com/

Makefile Python Assembly JavaScript PHP Shell

Updated: 1 year, 2 months ago
4 stars 2 fork 2 watcher
Born at : March 13, 2018, 7:26 a.m. This repo has been linked 10 different CVEs too.
Profile Photo
0neXo0r/Exploits

Miscellaneous proof of concept exploit code written at Xiphos Research for testing purposes.

Makefile Python Assembly PHP Shell

Updated: 1 year, 7 months ago
3 stars 2 fork 2 watcher
Born at : Oct. 8, 2017, 4:50 p.m. This repo has been linked 7 different CVEs too.
Profile Photo
rustyJ4ck/JoomlaCVE20168869

Exploit for Joomla 3.4.4 - 3.6.4 (CVE-2016-8869 and CVE-2016-8870)

joomla exploit poc php

PHP Batchfile

Updated: 2 months, 4 weeks ago
7 stars 6 fork 6 watcher
Born at : Nov. 10, 2016, 1:47 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
zugetor/Joomla-3.4.4-3.6.4_CVE-2016-8869_and_CVE-2016-8870

Source code: https://github.com/XiphosResearch/exploits/tree/master/Joomraa

Python

Updated: 8 years ago
0 stars 1 fork 1 watcher
Born at : Nov. 2, 2016, 2:35 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
XiphosResearch/exploits

Miscellaneous exploit code

exploits python poc rce php security hacking windows bypass tr-064

Python PHP Shell Makefile Assembly JavaScript

Updated: 2 months ago
1506 stars 514 fork 514 watcher
Born at : March 5, 2015, 11:15 a.m. This repo has been linked 10 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-8870 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-8870 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://medium.com/%40showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r [No types assigned]
    Removed Reference MITRE https://medium.com/@showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r
  • CVE Modified by [email protected]

    Jul. 29, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1037107 [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 07, 2016

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Nov. 07, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:joomla:joomla\!:3.6.3:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc No Types Assigned http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc Third Party Advisory
    Changed Reference Type https://www.exploit-db.com/exploits/40637/ No Types Assigned https://www.exploit-db.com/exploits/40637/ Third Party Advisory, Exploit
    Changed Reference Type https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html No Types Assigned https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html Vendor Advisory
    Changed Reference Type https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf No Types Assigned https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf Patch
    Changed Reference Type https://medium.com/@showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r No Types Assigned https://medium.com/@showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r Third Party Advisory, Technical Description
    Changed Reference Type http://www.securityfocus.com/bid/93876 No Types Assigned http://www.securityfocus.com/bid/93876 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1037108 No Types Assigned http://www.securitytracker.com/id/1037108 Third Party Advisory, VDB Entry
    Added CWE CWE-20
  • Initial Analysis by [email protected]

    Nov. 07, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR Configuration 1 OR *cpe:2.3:a:joomla:joomla\!:3.6.3:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc No Types Assigned http://www.rapid7.com/db/modules/auxiliary/admin/http/joomla_registration_privesc Third Party Advisory
    Changed Reference Type https://www.exploit-db.com/exploits/40637/ No Types Assigned https://www.exploit-db.com/exploits/40637/ Exploit, Third Party Advisory
    Changed Reference Type https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html No Types Assigned https://developer.joomla.org/security-centre/659-20161001-core-account-creation.html Vendor Advisory
    Changed Reference Type https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf No Types Assigned https://github.com/joomla/joomla-cms/commit/bae1d43938c878480cfd73671e4945211538fdcf Patch
    Changed Reference Type https://medium.com/@showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r No Types Assigned https://medium.com/@showthread/joomla-3-6-4-account-creation-elevated-privileges-write-up-and-exploit-965d8fb46fa2#.rq4qh1v4r Technical Description, Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/93876 No Types Assigned http://www.securityfocus.com/bid/93876 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1037108 No Types Assigned http://www.securitytracker.com/id/1037108 Third Party Advisory, VDB Entry
    Added CWE CWE-20
  • CVE Translated by [email protected]

    Nov. 05, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-8870 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-8870 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-23: File Content Injection File Content Injection CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-73: User-Controlled Filename User-Controlled Filename CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-81: Web Server Logs Tampering Web Server Logs Tampering CAPEC-83: XPath Injection XPath Injection CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-88: OS Command Injection OS Command Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-109: Object Relational Mapping Injection Object Relational Mapping Injection CAPEC-110: SQL Injection through SOAP Parameter Tampering SQL Injection through SOAP Parameter Tampering CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-136: LDAP Injection LDAP Injection CAPEC-153: Input Data Manipulation Input Data Manipulation CAPEC-182: Flash Injection Flash Injection CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-250: XML Injection XML Injection CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data Fuzzing for garnering other adjacent user/sensitive data CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-473: Signature Spoof Signature Spoof CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-664: Server Side Request Forgery Server Side Request Forgery
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

91.42 }} 79.10%

score

0.98936

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: