Medium severity · published Mar 31, 2021
CVE-2021-23982
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local…
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 87.0 · source: NVD
FE
Firefox Esr · Mozilla
before 78.9 · source: NVD
TH
Thunderbird · Mozilla
before 78.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23982
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-23982
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1677046
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-10/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-11/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-12/
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