CVE-2021-43536: Infoleak

Published Dec 7, 2021
·
Updated

Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL.

Affected Software

12 affected componentsFixes available
debian/firefox
118.0.2-1
debian/firefox-esr
91.12.0esr-1~deb10u1115.3.1esr-1~deb10u1102.15.0esr-1~deb11u1115.3.1esr-1~deb11u1102.15.1esr-1~deb12u1115.3.0esr-1~deb12u1115.3.0esr-1115.4.0esr-1
debian/thunderbird
1:91.12.0-1~deb10u11:115.3.1-1~deb10u11:102.13.1-1~deb11u11:115.3.1-1~deb11u11:102.15.1-1~deb12u11:115.3.1-1~deb12u11:115.3.1-1
Mozilla Thunderbird<91.4
91.4
Mozilla Firefox<95
95
Mozilla Firefox ESR<91.4
91.4
Mozilla Firefox<95.0
Mozilla Firefox ESR<91.4.0
Mozilla Thunderbird<91.4.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Debian Debian Linux=11.0

Event History

Dec 7, 2021
CVE Published
12:00 AM
Dec 8, 2021
CVE Published
via MITRE·09:20 PM
Data Sourced
via MITRE·09:20 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2021-43536?

CVE-2021-43536 has a moderate severity rating and can potentially expose sensitive URL information.

2

How do I fix CVE-2021-43536?

To fix CVE-2021-43536, update Thunderbird to version 91.4.0 or later, and Firefox ESR to version 91.4.0 or later.

3

Which software versions are affected by CVE-2021-43536?

CVE-2021-43536 affects Thunderbird versions prior to 91.4.0 and Firefox ESR versions prior to 91.4.0.

4

Can CVE-2021-43536 be exploited remotely?

Yes, CVE-2021-43536 can be exploited remotely under certain conditions due to the exposure of target URLs.

5

What platforms are impacted by CVE-2021-43536?

CVE-2021-43536 impacts platforms running affected versions of Thunderbird and Firefox, including Debian Linux distributions.

Contact

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