ALPINE-CVE-2020-6820

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Source
https://security.alpinelinux.org/vuln/CVE-2020-6820
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json
JSON Data
https://api.test.osv.dev/v1/vulns/ALPINE-CVE-2020-6820
Upstream
Published
2020-04-24T16:15:13Z
Modified
2026-10-27T08:32:40Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

References

Affected packages

Alpine:v3.11
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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"
Alpine:v3.12
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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"
mozjs68

Package

Name
mozjs68
Purl
pkg:apk/alpine/mozjs68?arch=source

Affected ranges

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

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"
Alpine:v3.13
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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"
Alpine:v3.14
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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"
Alpine:v3.15
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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.6.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
68.7.0-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.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
74.0.1-r0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2020-6820.json"