CVE-2020-15664 Information

Description

By holding a reference to the eval() function from an about:blank window a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion this could result in an unintended or malicious extension being installed. This vulnerability affects Firefox 80 Thunderbird 78.2 Thunderbird 68.12 Firefox ESR 68.12 Firefox ESR 78.2 and Firefox for Android 80.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1658214 https://www.mozilla.org/security/advisories/mfsa2020-36/ https://www.mozilla.org/security/advisories/mfsa2020-37/ https://www.mozilla.org/security/advisories/mfsa2020-38/ https://www.mozilla.org/security/advisories/mfsa2020-39/ https://www.mozilla.org/security/advisories/mfsa2020-40/ https://www.mozilla.org/security/advisories/mfsa2020-41/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5