Researchers Reveal Details on Now-Patched WhatsApp Vulnerability

The Out-of-Bounds vulnerability would have allowed hackers to access sensitive information in WhatsApp memory.

WhatsApp earlier this year patched a vulnerability that researchers say could have allowed an attacker to read sensitive information from the popular messaging apps memory.
Check Point Research (CPR) recently discovered what it termed an Out-Of-Bounds read-write vulnerability in the popular messaging application. The flaw would have required complex steps and extensive user interaction in order to exploit. WhatsApp told CheckPoint that they saw no evidence of abuse related to the bug.
The vulnerability related to the WhatsApp image filter functionality and was triggered when a user opened an attachment that contained a maliciously crafted image file, then tried to apply a filter, and then sent the image with the filter applied back to the attacker.
Check Point Research disclosed the findings to the WhatsApp team on November 10, 2020. WhatsApp verified and acknowledged the security issue and developed a fix.
A blog post that outlines the details can be found
here.

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Researchers Reveal Details on Now-Patched WhatsApp Vulnerability