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If hyperthreading is not disabled, a timing attack...

High severity Unreviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 28, 2023

Package

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Affected versions

Unknown

Patched versions

Unknown

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.

References

Published by the National Vulnerability Database Jul 23, 2019
Published to the GitHub Advisory Database May 24, 2022
Last updated Jan 28, 2023

Severity

High

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(76th percentile)

Weaknesses

CVE ID

CVE-2019-9815

GHSA ID

GHSA-crxf-6fx4-jr2j

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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