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VULNERABILITIES

CVE-2021-29969 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=1682370 CVEIssue TrackingPermissions RequiredVendor Advisory
https://security.gentoo.org/glsa/202208-14 CVEThird Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-30/ CVEVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1682370 [email protected]Issue TrackingPermissions RequiredVendor Advisory
https://security.gentoo.org/glsa/202208-14 [email protected]Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-552Files or Directories Accessible to External Parties[email protected]

Affected Products

ProductVersions
mozilla thunderbird
< 78.12

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-29969
NVD Published Date:
Aug 5, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]