CVE-2021-23982

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

https://www.mozilla.org/security/advisories/mfsa2021-11/

https://www.mozilla.org/security/advisories/mfsa2021-12/

https://www.mozilla.org/security/advisories/mfsa2021-10/

https://bugzilla.mozilla.org/show_bug.cgi?id=1677046

Details

Source: MITRE

Published: 2021-03-31

Updated: 2021-08-06

Type: CWE-326

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM

Tenable Plugins

View all (38 total)

IDNameProductFamilySeverity
151017Ubuntu 18.04 LTS : Thunderbird vulnerabilities (USN-4995-2)NessusUbuntu Local Security Checks
high
150949Ubuntu 20.04 LTS / 20.10 : Thunderbird vulnerabilities (USN-4995-1)NessusUbuntu Local Security Checks
high
150566SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2021:14684-1)NessusSuSE Local Security Checks
high
149555openSUSE Security Update : MozillaThunderbird (openSUSE-2021-580)NessusSuSE Local Security Checks
high
149233GLSA-202104-10 : Mozilla Firefox: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
149226GLSA-202104-09 : Mozilla Thunderbird: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
148913Amazon Linux 2 : thunderbird (ALAS-2021-1632)NessusAmazon Linux Local Security Checks
high
148308openSUSE Security Update : MozillaFirefox (openSUSE-2021-487)NessusSuSE Local Security Checks
high
148304SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:1007-1)NessusSuSE Local Security Checks
high
148276SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2021:0999-1)NessusSuSE Local Security Checks
high
148235Debian DSA-4876-1 : thunderbird - security updateNessusDebian Local Security Checks
high
148226SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:0966-1)NessusSuSE Local Security Checks
high
148206Debian DLA-2609-1 : thunderbird security updateNessusDebian Local Security Checks
high
148188CentOS 8 : firefox (CESA-2021:0990)NessusCentOS Local Security Checks
high
148187CentOS 8 : thunderbird (CESA-2021:0993)NessusCentOS Local Security Checks
high
148185CentOS 7 : thunderbird (CESA-2021:0996)NessusCentOS Local Security Checks
high
148184CentOS 7 : firefox (CESA-2021:0992)NessusCentOS Local Security Checks
high
148183Oracle Linux 8 : firefox (ELSA-2021-0990)NessusOracle Linux Local Security Checks
high
148181Oracle Linux 8 : thunderbird (ELSA-2021-0993)NessusOracle Linux Local Security Checks
high
148169Debian DSA-4874-1 : firefox-esr - security updateNessusDebian Local Security Checks
high
148166Debian DLA-2607-1 : firefox-esr security updateNessusDebian Local Security Checks
high
148135Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 : Firefox vulnerabilities (USN-4893-1)NessusUbuntu Local Security Checks
high
148134Oracle Linux 7 : thunderbird (ELSA-2021-0996)NessusOracle Linux Local Security Checks
high
148127Oracle Linux 7 : firefox (ELSA-2021-0992)NessusOracle Linux Local Security Checks
high
148121RHEL 8 : thunderbird (RHSA-2021:0994)NessusRed Hat Local Security Checks
high
148120RHEL 8 : firefox (RHSA-2021:0990)NessusRed Hat Local Security Checks
high
148119RHEL 8 : firefox (RHSA-2021:0991)NessusRed Hat Local Security Checks
high
148118RHEL 8 : firefox (RHSA-2021:0989)NessusRed Hat Local Security Checks
high
148116RHEL 8 : thunderbird (RHSA-2021:0993)NessusRed Hat Local Security Checks
high
148115RHEL 8 : thunderbird (RHSA-2021:0995)NessusRed Hat Local Security Checks
high
148114RHEL 7 : firefox (RHSA-2021:0992)NessusRed Hat Local Security Checks
high
148113RHEL 7 : thunderbird (RHSA-2021:0996)NessusRed Hat Local Security Checks
high
148110Mozilla Thunderbird < 78.9NessusWindows
high
148109Mozilla Thunderbird < 78.9NessusMacOS X Local Security Checks
high
148015Mozilla Firefox < 87.0NessusMacOS X Local Security Checks
high
148014Mozilla Firefox < 87.0NessusWindows
high
148013Mozilla Firefox ESR < 78.9NessusMacOS X Local Security Checks
high
148012Mozilla Firefox ESR < 78.9NessusWindows
high