Debian Linux Security Advisory 5034-1 - Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code, spoofing, information disclosure, downgrade attacks on SMTP STARTTLS connections or misleading display of OpenPGP/MIME signatures.
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Ubuntu Security Notice 5248-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, trick a user into accepting unwanted permissions, conduct header splitting attacks, conduct spoofing attacks, bypass security restrictions, confuse the user, or execute arbitrary code.
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Debian Linux Security Advisory 5026-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code, information disclosure or spoofing.
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Red Hat Security Advisory 2021-4605-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.3.0 ESR. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4607-03 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.3.0 ESR. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4134-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.3.0. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4130-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.3.0. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4132-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.3.0. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4133-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.3.0. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Ubuntu Security Notice 5131-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, bypass security restrictions, spoof the browser UI, confuse the user, conduct phishing attacks, or execute arbitrary code. It was discovered that the 'Copy Image Link' context menu action would copy the final image URL after redirects. If a user were tricked into copying and pasting a link for an embedded image that triggered authentication flows back to the page, an attacker could potentially exploit this to steal authentication tokens. Various other issues were also addressed.
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Red Hat Security Advisory 2021-4123-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.3.0 ESR. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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Red Hat Security Advisory 2021-4116-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.3.0 ESR. Issues addressed include bypass, spoofing, and use-after-free vulnerabilities.
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