Description

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1677338

https://www.mozilla.org/security/advisories/mfsa2020-53/

Details

Risk Information

CVSS v2

CVSS v3