BishopFox | Breaking Cybersecurity News | The Hacker News

No less than 330,000 FortiGate firewalls are still unpatched and vulnerable to CVE-2023-27997, a critical security flaw affecting Fortinet devices that has come under active exploitation in the wild. Cybersecurity firm Bishop Fox, in a  report  published last week, said that out of nearly 490,000 Fortinet SSL-VPN interfaces exposed on the internet, about 69 percent remain unpatched. CVE-2023-27997  (CVSS score: 9.8), also called XORtigate, is a critical vulnerability impacting Fortinet FortiOS and FortiProxy SSL-VPN appliances that could allow a remote attacker to execute arbitrary code or commands via specifically crafted requests. Patches were released by Fortinet last month in versions 6.0.17, 6.2.15, 6.4.13, 7.0.12, and 7.2.5, although the company  acknowledged  that the flaw may have been "exploited in a limited number of cases" in attacks targeting government, manufacturing, and critical infrastructure sectors. Bishop Fox's analysis further found th...

The legitimate command-and-control (C2) framework known as Sliver is  gaining   more traction  from threat actors as it emerges as an open source alternative to  Cobalt Strike  and Metasploit. The findings come from Cybereason, which  detailed  its inner workings in an exhaustive analysis last week. Sliver, developed by cybersecurity company BishopFox, is a Golang-based cross-platform post-exploitation framework that's designed to be used by security professionals in their red team operations. Its myriad features for adversary simulation – including dynamic code generation, in-memory payload execution, and process injection – have also made it an appealing tool for threat actors looking to gain elevated access to the target system upon gaining an initial foothold. In other words, the software is used as a second-stage to conduct next steps of the attack chain after already compromising a machine using one of the initial intrusion vectors such as...