CVE-2019-9793

 

Published at: - 26-04-2019 07:29

Last modified: - 24-09-2022 03:03

Total changes: - 2

Description

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

• https://www.mozilla.org/security/advisories/mfsa2019-11/
• https://www.mozilla.org/security/advisories/mfsa2019-08/
• https://www.mozilla.org/security/advisories/mfsa2019-07/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1528829
• RHSA-2019:0966-
• RHSA-2019:1144-

 

Keywords

NVD

 

CVE-2019-9793

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures