Tag: Layer 7 – Application
Introduction Welcome to the October 2024 installment of the Sensor Intelligence Series, our monthly summary of vulnerability intelligence based on distributed passive sensor data. Following on from our last month’s analysis, scanning of CVE-2017-9841 has fallen to barely a trickle. CVE-2023-1389, an RCE vulnerability in TP-Link Archer AX21 consumer routers, which has been consistently towards…
Read MoreIntroduction Welcome to the September 2024 installment of the Sensor Intelligence Series, our monthly summary of vulnerability intelligence based on distributed passive sensor data. Following on from our last month’s analysis, scanning CVE-2017-9841 continues to drop, falling by 10% compared to August, and now down 99.8% from its high-water mark in June of 2024, and…
Read MoreIntroduction Welcome to the August 2024 installment of the Sensor Intelligence Series, our monthly summary of vulnerability intelligence based on distributed passive sensor data. Last month, we observed the scanning for CVE-2017-9841 fell sharply, and this month is no different, with scanning for that vulnerability falling another 79% from July’s rate. Overall, it’s down 97.4%…
Read MoreIP Infrastructure Analysis, Use of Hosting Infra or Corporate IP Ranges (Geo Location Matching) Scrapers have to distribute their traffic via proxy networks or bot nets so as to spread their traffic over a large number of IP addresses and avoid IP-based rate limits that are used to block unwanted scraping. Because of this, scrapers…
Read MoreIntroduction Welcome to the July 2024 installment of the Sensor Intelligence Series, our monthly summary of vulnerability intelligence based on distributed passive sensor data. Last month we observed a massive increase in scanning for CVE-2017-9841 as well as continued increases in scanning for CVE-2023-1389 and scanning for a newly discovered PHP vulnerability – CVE-2024-4577. This…
Read MoreNote the large increase in the number of unique source IPs and source ASNs. Between May and June, 38 different source ASNs dropped from the scanning activity, and 179 were added. This is unusual. While scanners will abandon infrastructure as takedowns happen, or access is revoked, they typically do not make such massive changes without…
Read MoreWho Is Scanning for CVE-2023-1389? Back in April, when we first started tracking CVE-2023-1389, we did an analysis of who was scanning for it, and found that the majority of scanning activity was coming from just two ASNs, AS49870 (Alsycon, a hosting provider out of the Netherlands) and AS47890 (Unmanaged Ltd). Running these analyses again,…
Read MoreIntroduction Last month’s Sensor Intel Series for March 2024 uncovered the explosion in traffic hunting for systems affected by CVE-2023-1389. The flaw which related to TP-Link Archer AX21 Wi-Fi routers has quickly become the new darling of threat actors looking to build out their DDoS botnets. No new signatures have been introduced this month. Instead,…
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