Tag: CVE-2022-21587

Who 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,…

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Introduction 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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The majority of the scanning activity is coming from IP addresses assigned to just a handful of ASNs, mostly AS49870 (Alsycon, a hosting provider out of the Netherlands) and AS47890 (Unmanaged Ltd, what looks to be an IT consulting firm based out of the UK). The scanners appear to be using VPS or other resources…

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Zooming Out to Look at 2023 One of the questions we frequently get asked about this data is about attribution, that is, who is doing the scanning. This is a difficult question, because it is quite well understood that many threat actors take great pains to do at least a bit of obfuscation of their…

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This view is also notable since it is the first time we’re seeing any of these newly added, high-profile CVEs show up. Second row, far right is CVE-2014-6271, an OS command injection vulnerability more commonly known as Shellshock/Bashdoor. Shellshock shows more targeting variability from month to month than most CVEs (not including CVE-2020-11625, which has…

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Introduction Welcome to the February 2024 installment of the Sensor Intelligence Series, our monthly summary of vulnerability intelligence based on distributed passive sensor data. This month’s attack data is, at least in the most seen attacks, much like recent months. We continued to tweak our approach to threat hunting this month and managed to find…

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