Posts tagged Exploits

14 min Log4Shell

The Everyperson’s Guide to Log4Shell (CVE-2021-44228)

This blog is for everyone who wants to understand what’s going on with the Log4Shell vulnerability in Log4j and why the internet seems to be on fire again.

2 min Metasploit

Metasploit Wrap-Up

Word and Javascript are a rare duo. Thanks to thesunRider [https://github.com/thesunRider]. you too can experience the wonder of this mystical duo. The sole new metasploit module this release adds a file format attack to generate a very special document. By utilizing Javascript embedded in a Word document to trigger a chain of events that slip through various Windows facilities, a session as the user who opened the document can be yours. Do you like spiders? It has been 3 years since SMB2 suppo

2 min Metasploit

Metasploit Wrap-Up

Metasploit CTF 2021 starts today It’s that time of year again! Time for the 2021 Metasploit Community CTF [https://www.rapid7.com/blog/post/2021/11/16/announcing-the-2021-metasploit-community-ctf/] . Earlier today over 1,100 users in more than 530 teams were registered and opened for participation to solve this year’s 18 challenges. Next week a recap and the winners will be announced, so stay tuned for more information. Overlayfs LPE This week Metasploit shipped an exploit for the recent Overla

3 min Metasploit

Metasploit Wrap-Up

Self-Service Remote Code Execution This week, our own @wvu-r7 [https://github.com/wvu-r7] added an exploit module [https://github.com/rapid7/metasploit-framework/pull/15874] that achieves unauthenticated remote code execution in ManageEngine ADSelfService Plus, a self-service password management and single sign-on solution for Active Directory. This new module leverages a REST API authentication bypass vulnerability identified as CVE-2021-40539 [https://attackerkb.com/topics/DMSNq5zgcW/cve-2021-

3 min Metasploit

Metasploit Wrap-Up

Azure Active Directory login scanner module Community contributor k0pak4 [https://github.com/k0pak4] added a new login scanner module for Azure Active Directory [https://github.com/rapid7/metasploit-framework/pull/15755]. This module exploits a vulnerable [https://attackerkb.com/topics/rZ1JlQhXhc/cve-2020-16152?referrer=blog] authentication endpoint in order to enumerate usernames without generating log events. The error code returned by the endpoint can be used to discover the validity of user

3 min Metasploit

Metasploit Wrap-Up

GitLab RCE New Rapid7 team member jbaines-r7 [https://github.com/jbaines-r7] wrote an exploit targeting GitLab via the ExifTool command. Exploiting this vulnerability results in unauthenticated remote code execution as the git user. What makes this module extra neat is the fact that it chains two vulnerabilities together to achieve this desired effect. The first vulnerability is in GitLab itself that can be leveraged to pass invalid image files to the ExifTool parser which contained the second v

3 min Metasploit Weekly Wrapup

Metasploit Wrap-Up

Confluence Server OGNL Injection Our own wvu [https://github.com/wvu-r7] along with Jang [https://twitter.com/testanull] added a module that exploits an OGNL injection ( CVE-2021-26804 [https://attackerkb.com/topics/Eu74wdMbEL/cve-2021-26084-confluence-server-ognl-injection] )in Atlassian Confluence's WebWork component to execute commands as the Tomcat user. CVE-2021-26804 is a critical remote code execution vulnerability in Confluence Server and Confluence Data Center and is actively being expl

2 min Metasploit

Metasploit Wrap-Up

Desert heat (not the 1999 film) This week was more quiet than normal with Black Hat USA and DEF CON, but that didn’t stop the team from delivering some small enhancements and bug fixes! We are also excited to see two new modules #15519 [https://github.com/rapid7/metasploit-framework/pull/15519] and #15520 [https://github.com/rapid7/metasploit-framework/pull/15520] from researcher Jacob Baines’ [https://twitter.com/Junior_Baines] DEF CON talk ​​Bring Your Own Print Driver Vulnerability [https://

4 min Metasploit

Metasploit Wrap-Up

Now I Control Your Resource Planning Servers Sage X3 is a resource planning product designed by Sage Group which is designed to help established businesses plan out their business operations. But what if you wanted to do more than just manage resources? What if you wanted to hijack the resource server itself? Well wait no more, as thanks to the work of Aaron Herndon [https://www.linkedin.com/in/aaron-herndon-54079b5a/], Jonathan Peterson [https://www.linkedin.com/in/jonathan-p-004b76a1/], Will

3 min Metasploit

Metasploit Wrap-Up

New Emby version scanner, IPFire authenticated RCE, HashiCorp Nomad RCE, Microsoft SharePoint unsafe control and ViewState RCE.

3 min Metasploit

Metasploit Wrap-Up

NSClient++ Community contributor Yann Castel has contributed an exploit module for NSClient++ which targets an authenticated command execution vulnerability. Users that are able to authenticate to the service as admin can leverage the external scripts feature to execute commands with SYSTEM level privileges. This allows the underlying server to be compromised. Castel is also working on another exploit module for NSClient++ which happens to be a local privilege escalation so stay tuned for more N

3 min Vulnerability Management

BlueKeep Exploits May Be Coming: Our Observations and Recommendations

Rapid7 Labs has observed a significant uptick in malicious RDP activity since the release of CVE-2019-0708 (aka “BlueKeep”).

12 min Exploits

Stack-Based Buffer Overflow Attacks: Explained and Examples

Stack-based buffer overflow exploits are likely the shiniest and most common form of exploit for remotely taking over the code execution of a process.

5 min Exploits

macOS Keychain Security : What You Need To Know

If you follow the infosec twitterverse or have been keeping an eye on macOS news sites, you’ve likely seen a tweet [https://twitter.com/patrickwardle/status/912254053849079808] (with accompanying video) from Patrick Wardle (@patrickwardle [https://twitter.com/patrickwardle]) that purports to demonstrate dumping and exfiltration of something called the “keychain” without an associated privilege escalation prompt. Patrick also has a more in-depth Q&A blog post [https://www.patreon.com/posts/14556

3 min Vulnerability Disclosure

R7-2017-06 | CVE-2017-5241: Biscom SFT XSS (FIXED)

Summary The Workspaces component of Biscom Secure File Transfer (SFT) version 5.1.1015 is vulnerable to stored cross-site scripting in two fields. An attacker would need to have the ability to create a Workspace and entice a victim to visit the malicious page in order to run malicious Javascript in the context of the victim's browser. Since the victim is necessarily authenticated, this can allow the attacker to perform actions on the Biscom Secure File Transfer instance on the victim's behalf.