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  1. Are you using Foxit PDF Reader? If yes, then you need to watch your back. Security researchers have discovered two critical zero-day security vulnerabilities in Foxit Reader software that could allow attackers to execute arbitrary code on a targeted computer, if not configured to open files in the Safe Reading Mode. The first vulnerability (CVE-2017-10951) is a command injection bug discovered by researcher Ariele Caltabiano working with Trend Micro's Zero Day Initiative (ZDI), while the second bug (CVE-2017-10952) is a file write issue found by Offensive Security researcher Steven Seeley. An attacker can exploit these bugs by sending a specially crafted PDF file to a Foxit user and enticing them to open it. Foxit refused to patch both the vulnerabilities because they would not work with the "safe reading mode" feature that fortunately comes enabled by default in Foxit Reader. However, researchers believe building a mitigation doesn't patch the vulnerabilities completely, which if remained unpatched, could be exploited if attackers find a way to bypass safe reading mode in the near future. Both unpatched vulnerabilities can be triggered through the JavaScript API in Foxit Reader. CVE-2017-10951: The command injection bug resides in an app.launchURL function that executes strings provided by attackers on the targeted system due to lack of proper validation, as demonstrated in the video given below. CVE-2017-10952: This vulnerability exists within the "saveAs" JavaScript function that allows attackers to write an arbitrary file on a targeted system at any specific location, as demonstrated in the video given below. If you are one of those using Foxit Reader and PhantomPDF, ensure you have the "Safe Reading Mode" feature enabled. Additionally, you can also uncheck the "Enable JavaScript Actions" from Foxit's Preferences menu, although this may break some functionality. Users are also recommended always to be vigilant while opening any files they received via email. Just recently, we reported how opening a malicious PowerPoint file could compromise your computer with malware. So, always beware of phishing emails, spams, and clicking the malicious attachment. Source: https://thehackernews.com/2017/08/two-critical-zero-day-flaws-disclosed.html
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