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

WordPress 4.8.2 Activation Key Failed Expiry

WordPress 4.8.2 Activation Key Failed Expiry
Posted Oct 6, 2017
Authored by Glyn Wintle

WordPress version 4.8.2 fails to have an expiration mechanism tied to activation keys allowing for eternal use.

tags | exploit
advisories | CVE-2017-14990
SHA-256 | a00c295b2439bee4a8946da0bc86cb2acf8c5173fdf2b8e9ac7d765537d6f141

WordPress 4.8.2 Activation Key Failed Expiry

Change Mirror Download
Details
================
Software: WordPress
Version: 4.8.2
Homepage: https://wordpress.org/
Advisory report: https://security.dxw.com/advisories/wordpress-signups-activation/
CVE: CVE-2017-14990
CVSS: 0 (Low; AV:L/AC:H/Au:M/C:N/I:N/A:N)

Description
================
WordPress does not hash or expire wp_signups.activation_key allowing an attacker with SQL injection to create accounts

Vulnerability
================
When creating new users with a confirmation email, the key for that confirmation email is stored in plain text, and never expires. This means that when there are users who have been created who havenat followed the link in their confirmation emails (common in installations with lots of users), an attacker with access to a read-only SQLi vulnerability can immediately create a user account for themselves.



wp_users.user_activation_key is hashed and contains a timestamp. wp_signups.activation_key should include these security features too.



This issue was originally raised as a ticket in Trac.

Proof of concept
================

Visit /wp-admin/user-new.php (on a multisite installation a I havenat tested on single site)
Fill out the aAdd New Usera form but do not check the aSkip Confirmation Emaila checkbox
The user will be sent an email containing a link to /wp-activate.php?key=7259c714857ef009

This key is stored in the database unencrypted and without a timestamp:
mysql> select activation_key from wp_signups where signup_id=4;
+------------------+
| activation_key |
+------------------+
| 7259c714857ef009 |
+------------------+
1 row in set (0.00 sec)

Mitigations
================
Regularly purge old entries from the wp_signups table.

Disclosure policy
================
dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/

Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf.

This vulnerability will be published if we do not receive a response to this report with 14 days.

Timeline
================

2016-10-24: Opened Trac ticket
2017-10-02: Requested CVE
2017-10-02: Received CVE



Discovered by dxw:
================
Glyn Wintle
Please visit security.dxw.com for more information.




Login or Register to add favorites

File Archive:

September 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Sep 1st
    23 Files
  • 2
    Sep 2nd
    12 Files
  • 3
    Sep 3rd
    0 Files
  • 4
    Sep 4th
    0 Files
  • 5
    Sep 5th
    10 Files
  • 6
    Sep 6th
    8 Files
  • 7
    Sep 7th
    30 Files
  • 8
    Sep 8th
    14 Files
  • 9
    Sep 9th
    26 Files
  • 10
    Sep 10th
    0 Files
  • 11
    Sep 11th
    0 Files
  • 12
    Sep 12th
    5 Files
  • 13
    Sep 13th
    28 Files
  • 14
    Sep 14th
    15 Files
  • 15
    Sep 15th
    17 Files
  • 16
    Sep 16th
    9 Files
  • 17
    Sep 17th
    0 Files
  • 18
    Sep 18th
    0 Files
  • 19
    Sep 19th
    12 Files
  • 20
    Sep 20th
    15 Files
  • 21
    Sep 21st
    20 Files
  • 22
    Sep 22nd
    13 Files
  • 23
    Sep 23rd
    12 Files
  • 24
    Sep 24th
    0 Files
  • 25
    Sep 25th
    0 Files
  • 26
    Sep 26th
    30 Files
  • 27
    Sep 27th
    0 Files
  • 28
    Sep 28th
    0 Files
  • 29
    Sep 29th
    0 Files
  • 30
    Sep 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close