USN-5186-2

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Source
https://ubuntu.com/security/notices/USN-5186-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5186-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5186-2
Published
2021-12-20T22:35:44Z
Modified
2026-04-22T10:19:27.670151Z
Summary
firefox regressions
Details

USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, conduct spoofing attacks, bypass CSP restrictions, or execute arbitrary code. (CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546)

A security issue was discovered with the handling of WebExtension permissions. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to create and install a service worker that wouldn't be uninstalled with the extension. (CVE-2021-43540)

References

Affected packages

Ubuntu:18.04:LTS / firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@95.0.1+build2-0ubuntu0.18.04.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
95.0.1+build2-0ubuntu0.18.04.1

Affected versions

56.*
56.0+build6-0ubuntu1
57.*
57.0.1+build2-0ubuntu1
59.*
59.0.1+build1-0ubuntu1
59.0.2+build1-0ubuntu1
60.*
60.0+build2-0ubuntu1
60.0.1+build2-0ubuntu0.18.04.1
60.0.2+build1-0ubuntu0.18.04.1
61.*
61.0+build3-0ubuntu0.18.04.1
61.0.1+build1-0ubuntu0.18.04.1
62.*
62.0+build2-0ubuntu0.18.04.3
62.0+build2-0ubuntu0.18.04.4
62.0+build2-0ubuntu0.18.04.5
62.0.3+build1-0ubuntu0.18.04.1
63.*
63.0+build2-0ubuntu0.18.04.2
63.0.3+build1-0ubuntu0.18.04.1
64.*
64.0+build3-0ubuntu0.18.04.1
65.*
65.0+build2-0ubuntu0.18.04.1
65.0.1+build2-0ubuntu0.18.04.1
66.*
66.0+build3-0ubuntu0.18.04.1
66.0.1+build1-0ubuntu0.18.04.1
66.0.2+build1-0ubuntu0.18.04.1
66.0.3+build1-0ubuntu0.18.04.1
66.0.4+build3-0ubuntu0.18.04.1
66.0.5+build1-0ubuntu0.18.04.1
67.*
67.0+build2-0ubuntu0.18.04.1
67.0.1+build1-0ubuntu0.18.04.1
67.0.2+build2-0ubuntu0.18.04.1
67.0.3+build1-0ubuntu0.18.04.1
67.0.4+build1-0ubuntu0.18.04.1
68.*
68.0+build3-0ubuntu0.18.04.1
68.0.1+build1-0ubuntu0.18.04.1
68.0.2+build1-0ubuntu0.18.04.1
69.*
69.0+build2-0ubuntu0.18.04.1
69.0.1+build1-0ubuntu0.18.04.1
69.0.2+build1-0ubuntu0.18.04.1
70.*
70.0+build2-0ubuntu0.18.04.1
70.0.1+build1-0ubuntu0.18.04.1
71.*
71.0+build5-0ubuntu0.18.04.1
72.*
72.0.1+build1-0ubuntu0.18.04.1
72.0.2+build1-0ubuntu0.18.04.1
73.*
73.0+build3-0ubuntu0.18.04.1
73.0.1+build1-0ubuntu0.18.04.1
74.*
74.0+build3-0ubuntu0.18.04.1
74.0.1+build1-0ubuntu0.18.04.1
75.*
75.0+build3-0ubuntu0.18.04.1
76.*
76.0+build2-0ubuntu0.18.04.1
76.0.1+build1-0ubuntu0.18.04.1
77.*
77.0.1+build1-0ubuntu0.18.04.1
78.*
78.0.1+build1-0ubuntu0.18.04.1
78.0.2+build2-0ubuntu0.18.04.1
79.*
79.0+build1-0ubuntu0.18.04.1
80.*
80.0+build2-0ubuntu0.18.04.1
80.0.1+build1-0ubuntu0.18.04.1
81.*
81.0+build2-0ubuntu0.18.04.1
81.0.2+build1-0ubuntu0.18.04.1
82.*
82.0+build2-0ubuntu0.18.04.1
82.0.2+build1-0ubuntu0.18.04.1
82.0.3+build1-0ubuntu0.18.04.1
83.*
83.0+build2-0ubuntu0.18.04.2
84.*
84.0+build3-0ubuntu0.18.04.1
84.0.1+build1-0ubuntu0.18.04.1
84.0.2+build1-0ubuntu0.18.04.1
85.*
85.0+build1-0ubuntu0.18.04.1
85.0.1+build1-0ubuntu0.18.04.1
86.*
86.0+build3-0ubuntu0.18.04.1
86.0.1+build1-0ubuntu0.18.04.1
87.*
87.0+build3-0ubuntu0.18.04.2
88.*
88.0+build2-0ubuntu0.18.04.2
88.0.1+build1-0ubuntu0.18.04.2
89.*
89.0+build2-0ubuntu0.18.04.2
89.0.1+build1-0ubuntu0.18.04.1
89.0.2+build1-0ubuntu0.18.04.1
90.*
90.0+build1-0ubuntu0.18.04.1
90.0.2+build1-0ubuntu0.18.04.1
91.*
91.0+build2-0ubuntu0.18.04.1
91.0.1+build1-0ubuntu0.18.04.1
91.0.2+build1-0ubuntu0.18.04.1
92.*
92.0+build3-0ubuntu0.18.04.1
93.*
93.0+build1-0ubuntu0.18.04.1
94.*
94.0+build3-0ubuntu0.18.04.1
95.*
95.0+build1-0ubuntu0.18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "95.0.1+build2-0ubuntu0.18.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "95.0.1+build2-0ubuntu0.18.04.1",
            "binary_name": "firefox-geckodriver"
        },
        {
            "binary_version": "95.0.1+build2-0ubuntu0.18.04.1",
            "binary_name": "firefox-mozsymbols"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5186-2.json"
cves_map 
{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": []
}

Ubuntu:20.04:LTS / firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@95.0.1+build2-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
95.0.1+build2-0ubuntu0.20.04.1

Affected versions

69.*
69.0.3+build1-0ubuntu1
70.*
70.0+build2-0ubuntu1
70.0+build2-0ubuntu2
70.0.1+build1-0ubuntu2
71.*
71.0+build2-0ubuntu2
71.0+build5-0ubuntu1
72.*
72.0.1+build1-0ubuntu1
72.0.2+build1-0ubuntu1
73.*
73.0+build1-0ubuntu1
73.0+build2-0ubuntu1
73.0+build3-0ubuntu1
73.0.1+build1-0ubuntu1
74.*
74.0+build1-0ubuntu1
74.0+build2-0ubuntu1
74.0+build2-0ubuntu2
74.0+build3-0ubuntu1
75.*
75.0+build3-0ubuntu1
76.*
76.0+build2-0ubuntu0.20.04.1
76.0.1+build1-0ubuntu0.20.04.1
77.*
77.0.1+build1-0ubuntu0.20.04.1
78.*
78.0.1+build1-0ubuntu0.20.04.1
78.0.2+build2-0ubuntu0.20.04.1
79.*
79.0+build1-0ubuntu0.20.04.1
80.*
80.0+build2-0ubuntu0.20.04.1
80.0.1+build1-0ubuntu0.20.04.1
81.*
81.0+build2-0ubuntu0.20.04.1
81.0.2+build1-0ubuntu0.20.04.1
82.*
82.0+build2-0ubuntu0.20.04.1
82.0.2+build1-0ubuntu0.20.04.1
82.0.3+build1-0ubuntu0.20.04.1
83.*
83.0+build2-0ubuntu0.20.04.1
84.*
84.0+build3-0ubuntu0.20.04.1
84.0.1+build1-0ubuntu0.20.04.1
84.0.2+build1-0ubuntu0.20.04.1
85.*
85.0+build1-0ubuntu0.20.04.1
85.0.1+build1-0ubuntu0.20.04.1
86.*
86.0+build3-0ubuntu0.20.04.1
86.0.1+build1-0ubuntu0.20.04.1
87.*
87.0+build3-0ubuntu0.20.04.2
88.*
88.0+build2-0ubuntu0.20.04.1
88.0.1+build1-0ubuntu0.20.04.2
89.*
89.0+build2-0ubuntu0.20.04.2
89.0.1+build1-0ubuntu0.20.04.1
89.0.2+build1-0ubuntu0.20.04.1
90.*
90.0+build1-0ubuntu0.20.04.1
90.0.2+build1-0ubuntu0.20.04.1
91.*
91.0+build2-0ubuntu0.20.04.1
91.0.1+build1-0ubuntu0.20.04.1
91.0.2+build1-0ubuntu0.20.04.1
92.*
92.0+build3-0ubuntu0.20.04.1
93.*
93.0+build1-0ubuntu0.20.04.1
94.*
94.0+build3-0ubuntu0.20.04.1
95.*
95.0+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "95.0.1+build2-0ubuntu0.20.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "95.0.1+build2-0ubuntu0.20.04.1",
            "binary_name": "firefox-geckodriver"
        },
        {
            "binary_version": "95.0.1+build2-0ubuntu0.20.04.1",
            "binary_name": "firefox-mozsymbols"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5186-2.json"
cves_map 
{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": []
}