CVE-2021-38502
Thunderbird SMTP Downgrade and Authentication Bypass
Description
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2.
INFO
Published Date :
Nov. 3, 2021, 1:15 a.m.
Last Modified :
July 12, 2022, 5:42 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-38502.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1733366 | Issue Tracking Permissions Required Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html | Mailing List Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5034 | Issue Tracking Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-47/ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-38502 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38502 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-522 NVD-CWE-Other -
Modified Analysis by [email protected]
Mar. 17, 2022
Action Type Old Value New Value Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1733366 Permissions Required, Vendor Advisory https://bugzilla.mozilla.org/show_bug.cgi?id=1733366 Issue Tracking, Permissions Required, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5034 No Types Assigned https://www.debian.org/security/2022/dsa-5034 Issue Tracking, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 04, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html [No Types Assigned] -
CVE Modified by [email protected]
Jan. 03, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5034 [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 04, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1733366 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1733366 Permissions Required, Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-47/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-47/ Vendor Advisory Added CWE NIST CWE-522 Added CPE Configuration OR *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 91.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38502 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-38502
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} -0.01%
score
0.57683
percentile