![]() ![]() ![]() Applications/Xcode.app: accepted source=Apple SystemĪny result other than ‘accepted’ or any source other than ‘Mac App Store’, ‘Apple System’ or ‘Apple’ indicates that the application signature is not valid for Xcode.ĭownload a clean copy of Xcode and re-compile your apps before submitting them for review.Īpple also recently announced they would provide an official source for developers in the People’s Republic to download Xcode domestically from local China-based servers in response to XcodeGhost. Applications/Xcode.app: accepted source=Apple or ![]() Applications/Xcode.app: accepted source=Mac App Storeįor a version downloaded from the Apple Developer website, the result should read either The tool should return the following result for a version of Xcode downloaded from the Mac App Store: Spctl -assess -verbose /Applications/Xcode.app where /Applications/ is the directory where Xcode is installed. Run the following command in Terminal on a system with Gatekeeper enabled: Always download software from the official sourceĪpple also released instructions on how to validate your version of Xcode:.Check for Library/Frameworks/amework/CoreService in SDK/Applications/Xcode.app/Contents/Developer/Platforms /atform/Developer/SDKs/.To find out if you’re running XcodeGhost, the InfoSec Community Forums from SANS advises that developers check for a certain file in their software: Most of the developers that were affected were located in China. XcodeGhost has been spreading since March, with download links indexed and promoted in search engines for over six months now, making it likely that far more infected apps are out there (unconfirmed numbers estimating the total as hundreds and even thousands). Three command and control (C2) servers that communicated with the apps being hosted on Amazon were also identified and shut down, according to Threatpost, and Baidu has since removed links to download the malicious software. Apple has also sent an email to affected developers, urging them to recompile using the official Xcode software and re-submit apps, according to an update from Palo Alto Networks. There were at least 39 confirmed applications containing XcodeGhost, removed by Apple from its store, including WeChat, which has also fixed the security flaw in its newest iOS version. The more technical description of what infected apps can do involves sending request to servers with all kinds of device identifiers, with a response that can trigger different actions, like opening a URL. ![]() The effect of XcodeGhost on infected apps is similar to adware or tracking frameworks, rather than malicious malware, as Appthority reported. While the current version of XcodeGhost can’t actually be used to directly phish iCloud passwords, by changing just a few lines of code, it can be used to phish any kind of password, according to Palo Alto Networks researchers. But regardless, that’s still a big security risk for a developer, or any user, to take. Another article from TidBits blames it on China’s bandwidth limitations and restrictions to accessing foreign servers. But why would a developer download Xcode from a source other than Apple’s website?Īccording to an interview did with Palo Alto Networks, slow Xcode (size: three GB) download times in China (read: hours) could drive Chinese developers to download from unauthorized sources on Baidu instead of from Apple directly. The malicious version, dubbed XcodeGhost, was uploaded to China-based Baidu, a cloud service.Ī link to download XcodeGhost was shared in Chinese developer forums, which lead developers to download the malicious version in order to create infected apps they submitted to Apple Store. Attackers inserted malicious code into a version of Xcode, Apple’s official app development software. IOS developers were the target of a recent malware attack, not Apple Store, although malicious code was spread through many apps downloaded via the online app store. XcodeGhost: Resources for Developer and User Security ![]()
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