Software developer Chris Blume has discovered a screenshot security flaw in Windows 11’s Snipping Tool that could be exploited to access sensitive data.<\/p>\n
The tool doesn’t erase cropped PNG image data, meaning malicious actors could potentially recover and view the unused data.<\/p>\n
“I’ve got a fun one for you all to look at,” Blume said<\/a><\/strong>.<\/p>\n “I opened a 198-byte PNG with Microsoft’s Snipping Tool, chose “Save As” to overwrite a different PNG file (no editing), and saves a 4,762-byte file with all that extra after the PNG IEND chunk.”<\/p>\n Cybersecurity researcher David Buchanan confirmed that extracting the “hidden” data is possible using a modified version of a script demonstrating a similar vulnerability within the Android operating system.<\/p>\n “Windows Snipping Tool is vulnerable to aCropalypse too. An entirely unrelated codebase,” Buchanan said<\/a><\/strong>.<\/p>\n “The same exploit script works with minor changes (the pixel format is RGBA not RGB). Tested myself on Windows 11.”<\/p>\n Buchanan and programmer Simon Aarons recently discovered the “aCropalypse” vulnerability in the screenshot editing tool on Google Pixel phones.<\/p>\n The vulnerability doesn’t affect all screenshot files, including optimised images, and users can wipe cropped image data by saving cropped screenshots as another file in an image editor.<\/p>\n JPEG images are also vulnerable to leaving cropped data recoverable. However, the exploit doesn’t work with the image format yet.<\/p>\n Microsoft told BleepingComputer<\/a><\/strong> that it is investigating security reports and will “take action as needed” to protect Windows 11 users.<\/p>\n Malicious actors could recover cropped image data to view potentially sensitive information.<\/p>\n","protected":false},"author":341076,"featured_media":476507,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[85079,85059,85061,123,58630,83239,70233],"class_list":["post-484941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-acropalypse","tag-chris-blume","tag-david-buchanan","tag-microsoft","tag-screenshots","tag-snipping-tool","tag-windows-11"],"_links":{"self":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/484941"}],"collection":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/users\/341076"}],"replies":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/comments?post=484941"}],"version-history":[{"count":1,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/484941\/revisions"}],"predecessor-version":[{"id":485039,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/484941\/revisions\/485039"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/media\/476507"}],"wp:attachment":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/media?parent=484941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/categories?post=484941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/tags?post=484941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nNow read: Ferrari suffers ransomware attack<\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"