Apache Superset is a popular open source data exploration and visualization tool. In a previous post, we disclosed a vulnerability, CVE-2023-27524, affecting thousands of Superset servers on the Internet, that enables unauthorized attackers to gain admin access to...
Ivanti Sentry Authentication Bypass CVE-2023-38035 Deep Dive
Introduction Ivanti has recently published an advisory for CVE-2023-38035. The vulnerability has been added to CISA KEV and is described as an authentication bypass in the Ivanti Sentry administrator interface. This new vulnerability comes on the heels of an...
Lexmark Command Injection Vulnerability ZDI-CAN-19470 Pwn2Own Toronto 2022
Introduction In December 2022, we competed at our first pwn2own. We were able to successfully exploit the Lexmark MC3224i using a command injection 0-day. This post will detail the process we used to discover, weaponize, and have some fun with this vulnerability. You...
CVE-2023-39143: PaperCut Path Traversal/File Upload RCE Vulnerability
Summary CVE-2023-39143 is a critical vulnerability we disclosed to PaperCut that affects the widely used PaperCut NG/MF print management software. It affects PaperCut NG/MF running on Windows, prior to version 22.1.3. If you are a user of PaperCut on Windows, and have...
MOVEit Transfer CVE-2023-34362 Deep Dive and Indicators of Compromise
On May 31, 2023, Progress released a security advisory for their MOVEit Transfer application which detailed a SQL injection leading to remote code execution and urged customers to update to the latest version. The vulnerability, CVE-2023-34362, at the time of release...
CVE-2023-27524: Insecure Default Configuration in Apache Superset Leads to Remote Code Execution
Apache Superset is an open source data visualization and exploration tool. It has over 50K stars on GitHub, and there are more than 3000 instances of it exposed to the Internet. In our research, we found that a substantial portion of these servers - at least 2000...
PaperCut CVE-2023-27350 Deep Dive and Indicators of Compromise
Overview On 8 March 2023, PaperCut released new versions for their enterprise print management software, which included patches for two vulnerabilities: CVE-2023-27350 and CVE-2023-27351. The PaperCut security advisory details CVE-2023-27350 as a vulnerability that...
Veeam Backup and Replication CVE-2023-27532 Deep Dive
Introduction Veeam has recently released an advisory for CVE-2023-27532 for Veeam Backup and Replication which allows an unauthenticated user with access to the Veeam backup service (TCP 9401 by default) to request cleartext credentials. Others, including Huntress,...
From CVE-2022-33679 to Unauthenticated Kerberoasting
On September 13, 2022, a new Kerberos vulnerability was published on the Microsoft Security Response Center's security site. It's labeled as a Windows Kerberos Elevation of Privilege vulnerability and given the CVE ID CVE-2022-33679. The MSRC page acknowledges James...
Fortinet FortiNAC CVE-2022-39952 Deep-Dive and IOCs
Introduction On Thursday, 16 February 2023, Fortinet released a PSIRT that details CVE-2022-39952, a critical vulnerability affecting its FortiNAC product. This vulnerability, discovered by Gwendal Guégniaud of Fortinet, allows an unauthenticated attacker to write...
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