SNOW DAY CALCULATOR CODE
The user can input their zip code and the calculator will use this information to make its predictions. Snow day calculators are typically based on zip code data from the US and Canada. These calculators take into account factors such as expected temperature and precipitation levels, amount of snowfall accumulation, time between storms, visibility, wind speed. Snow day calculators work by using carefully developed formulas to predict the likelihood of a snow day or delay for school. Some snow day calculators are available as a web application, which can be accessed via web browser, and support multiple devices such as smartphones, tablets, and computers.
The Snow Day Calculator is the only automatic snow day predictor available, which uses historical data and weather data to provide predictions on the timing and strength of snow storms, It is a valuable tool that foretells the likelihood of school cancellations because of severe winter weather. It is designed to assist school administrators in making decisions, as well as helping parents and students anticipate potential school delays. What is a Snow day calculator?Ī snow day calculator is a tool that can help predict the likelihood of school closures or cancellations due to severe winter weather. Snow Day Calculators are great tools when planning ahead they can save parents and students alike from stressing over possibly having to brave treacherous weather conditions to get back to school! Snow days offer much needed respite during the hectic winter months, perfect for curling up with hot chocolate and a cosy blanket. It uses data from open weather sources, like satellites and ground stations, to determine the likelihood of precipitation on any given day and whether it will be snow. PHP is a very special language with some very special behavior that allows this.Snow Day Calculator is a program that predicts whether a day will be snowy. Mathematical formula, so why doesn’t the program crash when we put a string in Presumably, the Snow Day Calculator runs the number of snow days through some
SNOW DAY CALCULATOR PRO
Pro tip: the filter seems to block all single quotes, so use double quotes! Why does this work? We can bypass it by attaching an event handler to, say, an a tag: (%22surprise!%22)%3E%20hover%20over%20this,%20buddy%3C/a%3E&extra=0 While filtering suspicious activity is a good component in practicing defense inĭepth, it should not be your only security measure! Oops! Looks like they have some filtering in place to prevent XSS. We injected a big bold test in the middle of our page! This is very However, we can add arbitrary code to to the end of the number, like this: I’m notĬonvinced that the zipcode parameter is safe, but it’s too much effort to try toīreak it while I still have other options! Injecting the snowdays parameterĭirectly replacing the number supplied in the snowdays parameter doesn’t work.
This extra processing will foil a simple reflected XSS attack. Normalization to look up zipcodes from its database and the National Weather No luck! The zip code probably passes through some postprocessing and I’ll first try injecting some HTML into the zip code parameter. URL like the zipcode and the number of snow days. There are a lot! It looks like the page displays parts directly derived from the So we can probably give him some leeway here :) The Bugįirst, see if you can spot some likely candidates for a reflected XSS attack: Type of school, and the number of snow days this year. Popular web app for predicting the chance of a snow day, based on zip code, Owner through the site’s contact form and on Twitter, and have yet to Note: This vulnerability is currently unfixed. Tl dr: PHP’s type coercion and unescaped use of the page’s snowdays parameter allows injecting arbitrary HTML and Javascript via a reflected XSS attack.
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