CVE-2021-38505
Windows 10 Cloud Clipboard Firefox Sensitive Data Exposure Vulnerability
Description
Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it available on other computers in certain scenarios. Applications that wish to prevent copied data from being recorded in Cloud History must use specific clipboard formats; and Firefox before versions 94 and ESR 91.3 did not implement them. This could have caused sensitive data to be recorded to a user's Microsoft account. *This bug only affects Firefox for Windows 10+ with Cloud Clipboard enabled. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
INFO
Published Date :
Dec. 8, 2021, 10:15 p.m.
Last Modified :
Nov. 21, 2024, 6:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-38505
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Upgrade Firefox to version 94.0 or later.
- Upgrade Firefox ESR to version 91.3 or later.
- Update Thunderbird to version 91.3 or later.
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-2021-38505.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1730194 | Issue Tracking Permissions Required Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-48/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-49/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-50/ | Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1730194 | Issue Tracking Permissions Required Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-48/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-49/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-50/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38505 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-2021-38505
weaknesses.
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-2021-38505 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38505 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1730194 Added Reference https://www.mozilla.org/security/advisories/mfsa2021-48/ Added Reference https://www.mozilla.org/security/advisories/mfsa2021-49/ Added Reference https://www.mozilla.org/security/advisories/mfsa2021-50/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 10, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1730194 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1730194 Issue Tracking, Permissions Required, Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-48/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-48/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-49/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-49/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2021-50/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2021-50/ Vendor Advisory Added CWE NIST CWE-668 Added CPE Configuration AND OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 94.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 91.3.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 91.3.0 OR cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 6.5
Base CVSS Score: 4.3
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.44 }} -0.00%
score
0.62472
percentile