CVE-2020-12417

Mozilla: Memory corruption due to missing sign-extension for ValueTags on ARM64

Published Jul 9, 2020 CVSS 3.1 · 8.8 High EPSS 2.7% KEV · Not listed
Description
Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-4713-1 firefox-esr security update
Debian DSA Debian DSA DSA-4718-1 thunderbird security update
EUVD EUVD EUVD-2020-4729 Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.
Ubuntu USN Ubuntu USN USN-4408-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-4421-1 Thunderbird vulnerabilities
History

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