freejilo.blogg.se - Vbulletin exploit coderunner 3

#VBULLETIN EXPLOIT CODERUNNER 3 PATCH#
#VBULLETIN EXPLOIT CODERUNNER 3 FULL#
#VBULLETIN EXPLOIT CODERUNNER 3 SOFTWARE#

The exploits are a bypass of the fix for the previous vulnerability, CVE-2019-16759, which allows attackers to send a crafted HTTP request with a specified template name and malicious PHP code, and leads to remote code execution. Recently, Unit 42 researchers found exploits in the wild leveraging the vBulletin pre-auth RCE vulnerability CVE-2020-17496. By exploiting this vulnerability, an attacker could have gained privileged access and control over any vBulletin server running versions 5.0.0 up to 5.5.4, and potentially lock organizations out from their own sites.

At that time, Unit 42 researchers published a blog on this vBulletin vulnerability, analyzing its root cause and the exploit we found in the wild. Finally, we want to mention that we have updated TrustKeeper scan engine to detect vulnerable instances of vBulletin.In September 2019, a remote code execution (RCE) vulnerability identified as CVE-2019-16759 was disclosed for vBulletin, a popular forum software.

vBulletin says they will remove the vulnerable module (PHP Module) entirely in version 5.6.4.

#VBULLETIN EXPLOIT CODERUNNER 3 PATCH#

VBulletin issued a Security Patch that should be applied in the affected web applications as soon as possible. Please keep in mind this workaround may break some functionality but it will keep you safe from attacks until the patch is applied.

Look for “Disable PHP, Static HTML, and Ad Module rendering”, Set to “Yes”.

Choose “General Settings” and then click “Edit Settings”.

Click “Settings” in the menu on the left, then “Options” in the dropdown.

Go to the vBulletin administrator control panel.

In case patching is not possible, a workaround is to disable the PHP widgets within the forum. There was almost a 24-hour windows between the disclosure of the vulnerability, along with the Proof of Concept and workaround, and the official patch by vBulletn. An example of that was the famous Hacker Conference DEFCON’s forum as stated by Jeff Moss 3.

#VBULLETIN EXPLOIT CODERUNNER 3 FULL#

A full writeup of the vulnerability was disclosed, along with PoC and a workaround, by the original researcher and can be found at: Ī few hours after the bypass was released there was evidence of exploitation. It’s important to mention that there are several public exploits for this vulnerability, making it trivial to exploit. The previous example is a non-intrusive exploitation of the vulnerability, anyhow attackers may call PHP functions in order to execute code in the webserver, delete files, or other malicious activities. Injection of PHP code to create a new header via CVE-2020-7373 In the following screenshot we can see successful exploitation of this vulnerability:įigure 2. The vulnerability allows unauthenticated attackers to inject PHP code via widget configuration parameters.

#VBULLETIN EXPLOIT CODERUNNER 3 SOFTWARE#

Forum Software Usage according to BuiltWith website According to the BuildWith website, vBulletin tops the Forum Software Usage Distribution in the Top 1 Million Sites:įigure 1. vBulletin is a very popular software forum. This new vulnerability was given the identifier CVE-2020-7373. That CVE was exploited in the wild, for example, the Comodo Forums that exposed the data of 245,000 Users or the botnet activity targeting vulnerable vBulletin sites. Last week, security researcher Amir Etemadieh (aka Zenoflex) disclosed that vBulletin’s patch for CVE-2019-16759 (an unauthenticated remote code execution vulnerability) was incomplete.