CVE-2021-23958 — Resource Exposure in Mozilla Firefox

CWE-668 — Resource Exposure7 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
0.3%
top 44.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxDebian Firefox
Timeline
PublishedFeb 26
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages5 packages

▶debiandebian/firefox< firefox 85.0-1 (sid)
▶CVEListV5mozilla/firefox< 85
▶NVDmozilla/firefox< 85.0
▶Ubuntumozilla/firefox< 85.0+build1-0ubuntu0.16.04.1+2
▶mozillamozilla/firefox

🔴Vulnerability Details

2
GHSA
GHSA-h8m9-2c4v-j2jx: The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information↗2022-05-24
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OSV
CVE-2021-23958: The browser could have been confused into transferring a screen sharing state into another tab, which would leak unintended information↗2021-01-26
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📋Vendor Advisories

3
Ubuntu
Firefox vulnerabilities↗2021-02-01
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Debian
CVE-2021-23958: firefox - The browser could have been confused into transferring a screen sharing state in...↗2021
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Mozilla
Mozilla Foundation Security Advisory 2021-03: CVE-2021-23958↗
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