CVE-2020-12417
High
CVE-2020-12417
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.
Exploit probability
2.7%
Published
July 9, 2020
Required by
Not available
Last source change
April 16, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2020-12417
View original source
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.
05 / REFERENCES
Further evidence
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1640737
- https://security.gentoo.org/glsa/202007-09
- https://security.gentoo.org/glsa/202007-10
- https://usn.ubuntu.com/4421-1/
- https://www.mozilla.org/security/advisories/mfsa2020-24/
- https://www.mozilla.org/security/advisories/mfsa2020-25/
- https://www.mozilla.org/security/advisories/mfsa2020-26/