ALPINE-CVE-2021-43542

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Source
https://security.alpinelinux.org/vuln/CVE-2021-43542
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-43542
Upstream
Published
2021-12-08T22:15:09Z
Modified
2026-11-03T06:32:41Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

References

Affected packages

Alpine:v3.15
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.16
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.17
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.18
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.19
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.20
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.21
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
librewolf

Package

Name
librewolf
Purl
pkg:apk/alpine/librewolf?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.22
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
librewolf

Package

Name
librewolf
Purl
pkg:apk/alpine/librewolf?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.23
firefox

Package

Name
firefox
Purl
pkg:apk/alpine/firefox?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
firefox-esr

Package

Name
firefox-esr
Purl
pkg:apk/alpine/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
librewolf

Package

Name
librewolf
Purl
pkg:apk/alpine/librewolf?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
thunderbird

Package

Name
thunderbird
Purl
pkg:apk/alpine/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
91.4.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"
Alpine:v3.24
librewolf

Package

Name
librewolf
Purl
pkg:apk/alpine/librewolf?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
95.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-43542.json"