NVD

CVE-2019-9815 Detail

Description

If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. *Note: users need to update to macOS 10.14.5 in order to take advantage of this change.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 8.1 HIGH

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

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1546544	Permissions Required Third Party Advisory
https://mdsattacks.com/	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-13/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-203	Observable Discrepancy	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 7/29/2019 10:00:15 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:a:mozilla:firefox::::::::* versions up to (excluding) 67.0 cpe:2.3:a:mozilla:firefox_esr::::::::* versions up to (excluding) 60.7 cpe:2.3:a:mozilla:thunderbird::::::::* versions up to (excluding) 60.7 OR cpe:2.3:o:apple:mac_os:-:::::::*
Added	CVSS V2		(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added	CVSS V3		AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		CWE-362
Changed	Reference Type	https://bugzilla.mozilla.org/show_bug.cgi?id=1546544 No Types Assigned	https://bugzilla.mozilla.org/show_bug.cgi?id=1546544 Permissions Required, Third Party Advisory
Changed	Reference Type	https://mdsattacks.com/ No Types Assigned	https://mdsattacks.com/ Third Party Advisory
Changed	Reference Type	https://www.mozilla.org/security/advisories/mfsa2019-13/ No Types Assigned	https://www.mozilla.org/security/advisories/mfsa2019-13/ Vendor Advisory
Changed	Reference Type	https://www.mozilla.org/security/advisories/mfsa2019-14/ No Types Assigned	https://www.mozilla.org/security/advisories/mfsa2019-14/ Vendor Advisory
Changed	Reference Type	https://www.mozilla.org/security/advisories/mfsa2019-15/ No Types Assigned	https://www.mozilla.org/security/advisories/mfsa2019-15/ Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2019-9815
NVD Published Date:
07/23/2019
NVD Last Modified:
09/08/2021
Source:
Mozilla Corporation

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Information Technology Laboratory

National Vulnerability Database