Sites running the free version of Wordfence will receive the firewall rule update … We will not be releasing a proof of concept at this time, but we may release one in future to help other firewall vendors add protection to their products which will help the broader community stay safe. I'm a premium member so you did the update necessary? The secret key is normally defined when an API key is created for a given user. The vulnerability disclosed last week is an authentication bypass vulnerability, which could allow an attacker to use the authentication logic in the InfiniteWP Client plugin to authenticate and access the WordPress installation with InfiniteWP installed. 8 Comments on "Critical Authentication Bypass Vulnerability in InfiniteWP Client Plugin", Gracious Store January 14, 2020 at 10:00 am, Many site owners like me who manage their sites have no knowledge or understanding of the technicality of the vulnerability, we simply rely on paid security software to protect our sites, Phyllis Sather January 14, 2020 at 10:25 am. The CVSS score of this vulnerability is 7.5 (High) for websites with open registration, because no privileges are required in that case to exploit the vulnerability. Note that if you run Wordfence Premium, you have been protected against this attack since May 3rd which is when we disclosed this to the WordPress core team. No, the plugin must be activated in order to exploit this. An attacker would not need the InfiniteWP server installed to exploit this vulnerability; they could simply craft a request addressing the InfiniteWP logic to log in as any administrative user if they know the username. September 20th – Patch released In this case, InfiniteWP client provides a feature to automatically login as an administrator without supplying a password. We then get to the get_user() method that does a check based on the API key that was provided. For instance, the nickname or session_tokens meta key (which are defined for all users) could have been supplied instead of a valid API key. update done. On Monday, January 13, 2020, we released Wordfence version 7.4.3, which includes protection against the InfiniteWP Client authentication bypass vulnerability. It requires no authentication and is relatively easy to exploit.

CVSS Score: 7.5 (High)", Thanks for your contribution to the Wordpress community and for keeping our websites safe, TBI - Tips Blogging Indonesia June 21, 2016 at 2:17 pm. Free Wordfence users will receive the rule after thirty days. On websites with closed registration the CVSS score is 6.5 (Medium) because low privileges are required to exploit the vulnerability. May 3rd: We released a firewall rule to our Premium customers that protected against this vulnerability being exploited. The weakness allowed unauthenticated users to bypass API authentication methods and potentially access personally identifiable user information (PII) like names, addresses, IP addresses, and email addresses which should not be publicly accessible. When a site is initially connected to the InfiniteWP server, the request made by InfiniteWP server to the site actually exploits this vulnerability (unintentionally). The InfiniteWP Client plugin works by allowing a central management server to authenticate to the WordPress installation so that site owners can manage the site.

This flaw has been patched in version 2.5.5 and we recommend users update to the latest version available. GiveWP provides users with an API functionality in order to integrate donation data into webpages and applications like Zapier.

So far, we have not seen evidence of this vulnerability being exploited in the wild, but we expect to see attempts in the near future. Thank you to Matt Rusnak and Ramuel Gall for contributing to this update. This entry was posted in Vulnerabilities, WordPress Security on September 26, 2019 by Chloe Chamberland   0 Replies. There is also an authentication token that is used to validate this API request, however, for users that have not generated an API key, the authentication token is simply just the MD5 hash of the meta key that is used in place of a valid API key. A vulnerability has been discovered in the InfiniteWP Client plugin versions 1.9.4.4 or earlier.

As an additional note, the fix we have implemented for this vulnerability required tight integration with WordPress. At the time of this writing the official announcement credits “Dan Moen” who is our chief marketing officer and who sent the email to the WP Core team. Wordfence runs as a WordPress plugin and is therefore able to implement this kind of fix. Anonymous attackers are able to exploit this vulnerability and gain access to password protected posts on websites where registration is open. As a firewall vendor, our goal is to minimize false positives while blocking attacks. From within Wordfence, we can determine if the site is already connected to an InfiniteWP server, and prevent the vulnerable code from running if either the add_site or readd_site actions are passed to InfiniteWP client.

Protect your websites with the #1 WordPress Security Plugin, Get WordPress Security Alerts and Product Updates, CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, A proof of concept was published this morning, Trump Campaign Site Hacked – What We Know & Lessons Learned, Episode 92: WordPress Forced Security Autoupdate Protects Sites from Loginizer Vulnerability, Episode 91: How Hackers Can Use CSRF Vulnerabilities and Spearphishing to Wreak Havoc on WordPress. It runs at the endpoint, enabling deep integration with WordPress. WordPress allows you to create posts that are protected by a password and only users with that password can then gain access to the post. When a site is initially setup using InfiniteWP client, it needs to connect to the InfiniteWP server software. Sites running Wordfence Premium have been protected from attacks against this vulnerability since September 4th, 2019.

We included a rule in the Wordfence Firewall that was obfuscated which prevented it from being reverse engineered the moment we disclosed it to the vendor. The first check verifies if there is a valid user and API key, if there is no token or API key set then the request is automatically denied from moving further.

The next check is to verify a “signature” of the user’s API key which is the MD5 hash of a secret key concatenated with the supplied API key. Nice work guys! On May 3rd we disclosed a vulnerability in WordPress Core to the Core team that allowed any user with an unprivileged account to bypass the password protection WordPress provides. This flaw has been patched in version 2.5.5 and we recommend users update to the latest version available. October 4th – Firewall rule becomes available to free users. The initial request from the InfiniteWP server uses one of two actions, add_site or readd_site. In this example, we used the meta_key session_tokens and the MD5 hash of the string session_tokens which is ea78b7d35ff75719b36056cfa14ddcc8. 2 Comments on "Vulnerability in WordPress Core: Bypass any password protected post. However, it turned out that if no API key was generated, any user was able to access restricted endpoints by simply selecting any meta key from the wp_usermeta table and setting that as the authentication key. This is a critical authentication bypass vulnerability. We privately disclosed the issue to the plugin’s developer on September 3rd, who were quick to respond and released a patch shortly after. InfiniteWP Client is currently installed on over 300,000 WordPress sites. Personally Identifiable Information displayed when accessing vulnerable “donations” endpoint from GiveWP plugin. May 3rd: On the same day we disclosed the vulnerability to the WordPress core team. Sites running the free version of Wordfence will receive the firewall rule update on October 4th, 2019.

Credit specifically goes to Pan Vagenas who discovered the attack and to Ryan Britton, Matt Barry and Matt Rusnak for validating the vulnerability and developing and testing the firewall rule that we have been using to protect our customers from this attack. A proof of concept was published this morning, January 14, 2020. We don’t want to accidentally block legitimate traffic. The API key validation method can be found in the validate_request() method seen below.

The InfiniteWP server has the corresponding private key which is used to sign requests. By design, these actions are unauthenticated (since we don’t yet have a public key). This entry was posted in Vulnerabilities, WordPress Security on January 14, 2020 by Matt Barry   8 Replies.

Normally the Wordfence threat intelligence team would create a firewall rule and deploy it to existing Wordfence installations. You can create a post on the wordpress.org forums and one of our support engineers can assist you: https://wordpress.org/support/plugin/wordfence/.

No Comments on "Authentication Bypass Vulnerability in GiveWP Plugin", Protect your websites with the #1 WordPress Security Plugin, Get WordPress Security Alerts and Product Updates, This is considered a high security issue, and, CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, Trump Campaign Site Hacked – What We Know & Lessons Learned, Episode 92: WordPress Forced Security Autoupdate Protects Sites from Loginizer Vulnerability, Episode 91: How Hackers Can Use CSRF Vulnerabilities and Spearphishing to Wreak Havoc on WordPress. Here’s a basic proof of concept request which exploits the vulnerability. We’ve reached out to the WordPress Core team to correct the omission. Today, June 21st they released a fix for this vulnerability which is included in WordPress core version 4.5.3 which is a maintenance and security release. May 31st: The WP core team asked for an extension which we granted.

This entry was posted in Vulnerabilities, WordPress Security on June 21, 2016 by Mark Maunder   2 Replies. Unfortunately, in this check it doesn’t verify if the key was one generated by the Give API, but rather just fetches the user_id for any meta key in the wp_usermeta table, so if we pass in nickname or session_tokens as our meta key we’ll get back a valid user. We are bringing this to your attention because if you are using a cloud based WAF that does not tightly integrate with WordPress, you may not be protected against this vulnerability. The body of the request decodes to {"iwp_action":"add_site","params":{"username":"admin"}} which instructs the InfiniteWP client to run the add_site action, and also to login as the admin user. Anonymous attackers are able to exploit this vulnerability and gain access to password protected posts on websites where registration is open.

It is in fact the Wordfence Research Team who found this vulnerability. Our recommendation at this time is to update your InfiniteWP Client plugin as soon as possible to version 1.9.4.5. If you are using InfiniteWP client version 1.9.4.4 or earlier we recommend immediately updating your installation to protect your site. WordFence WAF XSS Bypass – CVE-2019-9669 by Anthony Yalcin. Hi Phyllis, yes, we recommend both premium and free users update Wordfence to 7.4.3, and the InfiniteWP Client plugin to version 1.9.4.5 as soon as possible.

By inspecting HTTP traffic, it can prevent attacks related to web application security flaws, such as SQL injection, cross-site scripting (XSS), and security misconfigurations.

September 3rd – Plugin developer notified of the security issue


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