CVEvulnerability

CVE-2020-12417

8.8 HIGH Published 2020-07-09 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-07-09
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-617, CWE-681, CWE-787

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.

Affected configurations

• mozilla firefox (< 78.0) • mozilla firefox esr (< 68.10.0) • mozilla thunderbird (< 68.10.0) • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.10 • canonical ubuntu linux 20.04 • opensuse leap 15.1 • opensuse leap 15.2

Related

Weakness · CWE (3)

  • CWE-617 Reachable Assertion weakness
  • CWE-681 Incorrect Conversion between Numeric Types weakness
  • CWE-787 Out-of-bounds Write weakness

References