Vulnerability CVE-2021-23958
Published: 2021-02-26

Description:
The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information. This vulnerability affects Firefox < 85.

Type:

CWE-668

 (Exposure of Resource to Wrong Sphere)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Mozilla -> Firefox 

 References:
https://bugzilla.mozilla.org/show_bug.cgi?id=1642747
https://www.mozilla.org/security/advisories/mfsa2021-03/
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