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Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code.

The host is missing a high severity security update according to the Mozilla advisory MFSA2021-45 and is prone to multiple vulnerabilities. The flas are present in the application, which fails to properly handle unspecified vectors. Successful exploitation allows an attacker to have unspecified impact.

Mozilla Firefox 93, Mozilla Firefox ESR 91.2 and Thunderbird 91.2 : In the crossbeam crate, one or more tasks in the worker queue could have been be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this could have caused a double free and a memory leak.

Mozilla Firefox 93, Mozilla Firefox ESR 91.2 and Thunderbird 91.2 : Through use of code reportValidity()/code and code window.open()/code , a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks.

Mozilla Firefox 93, Mozilla Firefox ESR 91.2 and Thunderbird 91.2 : During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash.

Mozilla Firefox 93, Mozilla Firefox ESR 91.2 and Thunderbird 91.2 : Mozilla developers and community members Kevin Brosnan, Mihai Alexandru Michis, and Christian Holler reported memory safety bugs present in Firefox 92 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

The host is missing a high severity security update according to the Mozilla advisory MFSA2021-45 and is prone to multiple vulnerabilities. The flas are present in the application, which fails to properly handle unspecified vectors. Successful exploitation allows an attacker to have unspecified impact.

The host is missing a high severity security update according to the Mozilla advisory MFSA2021-47 and is prone to multiple vulnerabilities. The flas are present in the application, which fails to properly handle unspecified vectors. Successful exploitation allows an attacker to have unspecified impact.

The host is missing a high severity security update according to the Mozilla advisory MFSA2021-47 and is prone to multiple vulnerabilities. The flas are present in the application, which fails to properly handle unspecified vectors. Successful exploitation allows an attacker to have unspecified impact.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.2.0 ESR. Security Fix: * Mozilla: Use-after-free in MessageTask * Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 * Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 * rust-crossbeam ...


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