Surge in attack traffic
In concert with three new vulnerabilities in a number of Fortinet products (CVE-2024-23111 – 6.2, CVE-2023-46720 – 6.3 and CVE-2024-21754 – 1.7), our ThreatFeed detected another surge in attack traffic against Fortinet devices in the field. Some interesting take-aways from the data on our end is that the attacks appeared to peak when the vulnerabilities were announced and then wane pretty quickly from there. Additionally, the majority of the blocked traffic (it’s worth noting that this is aggregate, so some is likely related to the attacks and some is other assorted garbage) originated from the Netherlands, which seems strange. The final graph shows the number of addresses logged into ThreatFeed by day, jumping from just over 100 on 27 April to just over 800 on 4 May.


It’s also worth noting that CVE-2024-23111 affects all FortiOS v7.2 devices BUT requires that the attacker already have privileged access and super-admin to exploit. CVE-2023-46720 does not require privileged access to exploit but was patched in FortiOS 7.4.1 and 7.2.7.
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