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CVE-2021-38506

Publication date 3 November 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.3 · Medium

Score breakdown

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Read the notes from the security team

Status

Package Ubuntu Release Status
firefox 24.04 LTS noble
Fixed 94.0+build3-0ubuntu1
23.10 mantic
Fixed 94.0+build3-0ubuntu1
23.04 lunar
Fixed 94.0+build3-0ubuntu1
22.10 kinetic
Fixed 94.0+build3-0ubuntu1
22.04 LTS jammy
Fixed 94.0+build3-0ubuntu1
21.10 impish
Fixed 94.0+build3-0ubuntu0.21.10.1
21.04 hirsute
Fixed 94.0+build3-0ubuntu0.21.04.1
20.04 LTS focal
Fixed 94.0+build3-0ubuntu0.20.04.1
18.04 LTS bionic
Fixed 94.0+build3-0ubuntu0.18.04.1
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
mozjs38 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
mozjs52 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.04 LTS focal Ignored
18.04 LTS bionic Ignored
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
mozjs68 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.04 LTS focal Ignored
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
mozjs78 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Ignored
22.10 kinetic Ignored
22.04 LTS jammy Ignored
21.10 impish Ignored
21.04 hirsute Ignored
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
thunderbird 24.04 LTS noble
Fixed 1:91.3.1+build1-0ubuntu1
23.10 mantic
Fixed 1:91.3.1+build1-0ubuntu1
23.04 lunar
Fixed 1:91.3.1+build1-0ubuntu1
22.10 kinetic
Fixed 1:91.3.1+build1-0ubuntu1
22.04 LTS jammy
Fixed 1:91.3.1+build1-0ubuntu1
21.10 impish
Fixed 1:91.3.1+build1-0ubuntu0.21.10.1
21.04 hirsute Ignored
20.04 LTS focal
Fixed 1:91.5.0+build1-0ubuntu0.20.04.1
18.04 LTS bionic
Fixed 1:91.5.0+build1-0ubuntu0.18.04.1
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release

Notes

tyhicks

mozjs contains a copy of the SpiderMonkey JavaScript engine

Severity score breakdown

Parameter Value
Base score 4.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-5131-1
    • Firefox vulnerabilities
    • 3 November 2021
    • USN-5152-1
    • Thunderbird vulnerabilities
    • 18 November 2021
    • USN-5248-1
    • Thunderbird vulnerabilities
    • 21 January 2022

Other references