ALPINE-CVE-2021-38507

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Source

https://security.alpinelinux.org/vuln/CVE-2021-38507

Import Source

https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.json

JSON Data

https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-38507

Upstream

CVE-2021-38507

Published

2021-12-08T22:15:08Z

Modified

2026-11-03T06:32:58Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator

Summary

[none]

Details

The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

References

https://security.alpinelinux.org/vuln/CVE-2021-38507

Affected packages

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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

91.3.2-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.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

94.0-r0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-38507.json"