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Mozilla has launched the latest version of its Firefox browser, which knocks out high-severity security flaws that leave systems open to attack by a remote adversary. The patched version of Mozilla’s browser, launched on Tuesday, is Firefox 73 and Firefox ESR 68.5. The Firefox ESR browser is its Extended Support Release version of Firefox, designed for mass deployments. Both releases tackle six vulnerabilities. Two of the high-severity bugs both allow a remote attacker to execute code on targeted devices by enticing users to visit a specially-crafted web site and exploiting browser memory corruption flaws. The Mozilla security bulletin said both high-severity flaws are tied to “memory safety bugs within the browser engine”. One of the vulnerabilities, tracked as CVE-2020-6800, was fixed in a previous release of Firefox 72 and the current Firefox ESR 68.5 update on Tuesday. The other vulnerability (CVE-2020-6801) was fixed with the release of Firefox 73, released on Tuesday. Memory safety mechanisms protects systems from various software bugs tied to memory access, such as buffer overflows and other issues. According to the IBM X-Force team’s analysis, a remote attacker could exploit either one of the vulnerabilities by persuading a victim to visit a specially-crafted webpage, and then use an “unknown attack vectors” to execute arbitrary code on the vulnerable system or cause a denial of service (DoS). “Some of these bugs showed evidence of memory corruption and we presume…

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