The security researcher Sabri Haddouche from Wire discovered a bug that affects Firefox on Mac, Linux, and Windows that could crash the browser and in some cases the underlying PC.
Haddouche was focusing its analysis on vulnerabilities that affect major browsers (Chrome, Safari (WebKit), and Firefox), he published his findings on the Browser Reaper web site.
The expert published on the website the PoC code to crash Firefox on Macs and Linux systems, causing the browser displaying the Crash Reporter message.
The expert published the proof-of-concept code on GitHub.
The issue could have more severe effects on Windows because in some circumstance it caused the freezing of the operating system.
Researchers at ZDNet conducted some tests to verify which systems are affected by the bug.
“During our experiments, the DoS bug worked against the latest Firefox stable release, but also Firefox Developer and Nightly editions.” states ZDNet.
“The bug did not crash Firefox for Android instances, according to ZDNet’s tests. Firefox uses the WebKit engine on iOS, instead of its new Quantum engine, so iPhone and iPad users aren’t affected.”
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