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#CVE-2018-5093: Buffer overflow in WebAssembly during Memory/Table resizing Reporter OSS-Fuzz Impact high DescriptionĪ heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. #CVE-2018-5092: Use-after-free in Web Workers Reporter Looben Yang Impact high DescriptionĪ use-after-free vulnerability can occur when the thread for a Web Worker is freed from memory prematurely instead of from memory in the main thread while cancelling fetch operations. This results in a potentially exploitable crash. #CVE-2018-5091: Use-after-free with DTMF timers Reporter Looben Yang Impact critical DescriptionĪ use-after-free vulnerability can occur during WebRTC connections when interacting with the DTMF timers. Mozilla Foundation Security Advisory 2018-02 Security vulnerabilities fixed in Firefox 58 Announced JanuImpact critical Products Firefox Fixed in