Less EdgeĬhoose the web browser you're using for exact steps on how to download and run the automated solution.Īt the bottom of the browser window, select Run to launch the SetupProd_OffScrub.exe file.
, Dean of Research, SANS.Office 365 Office 2019 Office 2016 Office 2013 More. Not sure if anybody has an idea what the username or password would be. For example, the uClibc and uClibc-ng libraries were recently found to have vulnerabilities like this.Īs for the cat feeder, I haven't been able to verify which library it uses, and it does have however, an open telnet server to be compliant with the minimum number of vulnerability rules for IoT devices. This is a known issue with many IoT devices using specific networking libraries.
So all the queries use the same query id (I have also seen "1" and "3"). % tshark -nr sessions.pcap -T fields -e 'dns.id' | sort -u There is another interesting issue with these DNS queries.
First of all, "Baidu" is more commonly used than "Google", and due to the censorship regime, which may not only block DNS lookups for Google but may also use these DNS lookups to identify non-regime-conform behavior not to get Chinese users into trouble, they may opt for the use of Baidu which works fine globally. The device is happy as long as an IP address is returned.īut why and not or '8.8.8.8' (or )? This is likely due to these devices and some libraries manufactured and coded in China. Even if the DNS lookup succeeds, there is no actual outbound connection in this case. So I soon noticed these DNS queries originating from the cat feeder:Ġ catfeeder → dnsserver DNS 73 Standard query 0x0002 A ģ01 catfeeder → dnsserver DNS 73 Standard query 0x0002 A Ħ02 catfeeder → dnsserver DNS 73 Standard query 0x0002 A Ībout every 5 minutes (300 seconds), the cat feeder attempts to resolve "." Why ? What is my cat trying to search for?Īfter investigating this on different devices showing similar behavior, I finally figured out that some networking libraries use "" for internet connectivity checks. The IoT network is pretty much locked down and closely monitored. The cat feeder is sporting not just the obligatory WiFi and Cloud/App connectivity but also a camera, so it was immediately moved to our "IoT" network. To help, we got her an automated cat feeder to better control her food intake. Gluon now spends most of her time inside doing cat stuff like grooming and sleeping unfortunately, she has gained an unhealthy amount of weight. Last year, a new cat, Einstein, invaded her property, and since then, she has no longer ventured outside after some unfortunate encounters with Einstein.
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