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Mageia 7 - MGASA-2020-0352 Moderate: Thunderbird Extension Risk

mageia
Calendar Grey August 28, 2020
Dist Mageia Esm H88
Recent Thunderbird updates tackle vulnerabilities that could allow harmful extensions to be installed.
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...

Summary

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 (CVE-2020-15664).
When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code (CVE-2020-15669).

References

- https://bugs.mageia.org/show_bug.cgi?id=27204

- https://www.thunderbird.net/en-US/thunderbird/68.12.0/releasenotes/

- https://www.mozilla.org/en-US/security/advisories/mfsa2020-40/

- https://www.cve.org/CVERecord?id=CVE-2020-15664

- https://www.cve.org/CVERecord?id=CVE-2020-15669

Topics%20covered

Topics Covered

security advisory update malicious code thunderbird mageia extension risk InstallTrigger

Resolution

SRPMS

- 7/core/thunderbird-68.12.0-1.mga7

- 7/core/thunderbird-l10n-68.12.0-1.mga7

Publication date: 28 Aug 2020
URL: https://advisories.mageia.org/MGASA-2020-0352.html
Type: security
CVE: CVE-2020-15664, CVE-2020-15669

Topics%20covered

Topics Covered

security advisory update malicious code thunderbird mageia extension risk InstallTrigger

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