CVE-2021-29956

Public Exploit

Description

OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored unencrypted on the user's local disk. The master password protection was inactive for those keys. Version 78.10.2 will restore the protection mechanism for newly imported keys, and will automatically protect keys that had been imported using affected Thunderbird versions. This vulnerability affects Thunderbird < 78.10.2.

References

Link	Tags
https://www.mozilla.org/security/advisories/mfsa2021-22/	release notes vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1710290	patch vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-29956?: CVE-2021-29956 has been scored as a medium severity vulnerability.
How to fix CVE-2021-29956?: To fix CVE-2021-29956, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29956 being actively exploited in the wild?: It is possible that CVE-2021-29956 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29956?: CVE-2021-29956 affects Mozilla Thunderbird.

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Description

Category

CWE-312 – Cleartext Storage of Sensitive Information

References

Frequently Asked Questions