DEBIAN-CVE-2020-12387

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Source
https://security-tracker.debian.org/tracker/CVE-2020-12387
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-12387.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2020-12387
Upstream
Published
2020-05-26T18:15:10Z
Modified
2025-09-30T03:54:28Z
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

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

References

Affected packages

Debian:11

firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
68.8.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.8.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12

firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
68.8.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.8.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13

firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
68.8.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.8.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14

firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
68.8.0esr-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.8.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}