Tag: Exploits
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…
Read MoreConclusion Organizations should continually run external vulnerability scans to discover what systems are exposed publicly, and on which specific ports. Any systems exposed publicly with the top attacked ports open should be prioritized for vulnerability management. A lot of the attacks we see on ports supporting access services like SSH are brute force, so any…
Read MoreThe table in Figure 4 shows the top 50 ASNs attacking Australia from Dec 1, 2018 to March 1, 2019 in order of highest to lowest number of attacks. Interestingly, these top 50 networks were split fifty-fifty between ISPs and hosting companies whereas the company types attacking other regions lean heavier towards ISPs. For comparison,…
Read MoreThe discovery of a significant container-based (runc) exploit sent shudders across the Internet. Exploitation of CVE-2019-5736 can be achieved with “minimal user interaction” it subsequently allows attackers to gain root-level code execution on the host. Scary, to be sure. Scarier, however, is that the minimal user interaction was made easier by failure to follow a…
Read MoreExecutive Summary Phishing remains a popular method of stealing credentials, committing fraud, and distributing malware. But what appears on the surface to be a juvenile form of cybercrime can be, in practice, a well-orchestrated, multi-faceted, and sustained attack campaign by organized crime groups. From finding victims and creating phishing sites to harvesting and fraudulently using…
Read MoreAugust Port Scan Data F5 Labs also analyzes data for TCP ports other than 80 and 443 from the Efflux network. The top 10 ports for August 2022 follow patterns we’ve been seeing for years, with port 5900 (VNC) topping the list, followed by a collection of ports used mainly for remote access (ssh, telnet,…
Read MoreThe title of this report is not a typo. “The State of the State of Application Exploits in Security Incidents” is a meta-analysis of several prominent industry reports, each of which covers the state of application security, hence the name, “the state of the state of.” This report is both an attempt to stitch together…
Read MoreVulnerabilities New and Old Particularly avid readers, or perhaps just readers with a magnifying glass, will note that there are six-and-a-half new vulnerabilities in Figure 3 compared with our November SIS. We say a half-new vulnerability because one of the new ones is indistinguishable from an existing signature. While tuning the pattern for CVE-2022-41040, a…
Read MoreWelcome to the Sensor Intel Series installment for January 2023. The purpose of this recurring monthly brief is to provide security practitioners with vulnerability targeting intelligence so that they can make better-informed decisions about patching and vulnerability remediation. The source of this intelligence is log data from a globally distributed network of passive sensors. While…
Read MoreAlso notable this month is the dramatic growth in CVE-2020-25078, which is also an IoT vulnerability but this time in several IP cameras. On the one hand the volume of traffic scanning for this vulnerability was not remarkable, with ~3600 connections in February, but only 200 connections were attempted in January, which means traffic increased…
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