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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2021-4128
HistoryDec 22, 2022 - 8:15 p.m.

CVE-2021-4128

2022-12-2220:15:11
Debian Security Bug Tracker
security-tracker.debian.org
17
graphics
fullscreen mode
memory corruption
macos
operating systems
vulnerability
firefox

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

34.2%

When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.<br>This bug only affects Firefox on MacOS. Other operating systems are unaffected.. This vulnerability affects Firefox < 95.

OSVersionArchitecturePackageVersionFilename
Debian999allfirefox< 127.0.2-1firefox_127.0.2-1_all.deb

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

34.2%