CVE-2021-29969

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS…

published August 5, 2021

CVSS
—
EPSS
1%
Percentile
67.9
In the wild
Unconfirmed
What it is

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01200 · 67.9th percentile
Published
2021-08-05T19:46Z
EPSS history
Timeline
  • 05 AUG 19:46Z
    If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS…
    cvelistv5