UBUNTU-CVE-2021-29957

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Source
https://ubuntu.com/security/CVE-2021-29957
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29957.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-29957
Upstream
Downstream
Related
Published
2021-05-28T00:00:00Z
Modified
2025-09-08T16:47:06Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected. This vulnerability affects Thunderbird < 78.10.2.

References

Affected packages

Ubuntu:18.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:78.11.0+build1-0ubuntu0.18.04.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:78.11.0+build1-0ubuntu0.18.04.2

Affected versions

1:52.*

1:52.4.0+build1-0ubuntu2
1:52.6.0+build1-0ubuntu1
1:52.7.0+build1-0ubuntu1
1:52.8.0+build1-0ubuntu0.18.04.1
1:52.9.1+build3-0ubuntu0.18.04.1

1:60.*

1:60.2.1+build1-0ubuntu0.18.04.2
1:60.4.0+build2-0ubuntu0.18.04.1
1:60.5.1+build2-0ubuntu0.18.04.1
1:60.6.1+build2-0ubuntu0.18.04.1
1:60.7.0+build1-0ubuntu0.18.04.1
1:60.7.1+build1-0ubuntu0.18.04.1
1:60.7.2+build2-0ubuntu0.18.04.1
1:60.8.0+build1-0ubuntu0.18.04.1
1:60.9.0+build1-0ubuntu0.18.04.1

1:68.*

1:68.2.1+build1-0ubuntu0.18.04.1
1:68.2.2+build1-0ubuntu0.18.04.1
1:68.4.1+build1-0ubuntu0.18.04.1
1:68.7.0+build1-0ubuntu0.18.04.1
1:68.8.0+build2-0ubuntu0.18.04.2
1:68.10.0+build1-0ubuntu0.18.04.1

1:78.*

1:78.8.1+build1-0ubuntu0.18.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        }
    ]
}

Ubuntu:20.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:78.11.0+build1-0ubuntu0.20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:78.11.0+build1-0ubuntu0.20.04.2

Affected versions

1:68.*

1:68.1.2+build1-0ubuntu1
1:68.1.2+build1-0ubuntu2
1:68.2.1+build1-0ubuntu1
1:68.2.2+build1-0ubuntu1
1:68.3.0+build2-0ubuntu1
1:68.3.1+build1-0ubuntu2
1:68.4.1+build1-0ubuntu1
1:68.4.2+build2-0ubuntu1
1:68.5.0+build1-0ubuntu1
1:68.6.0+build2-0ubuntu1
1:68.7.0+build1-0ubuntu1
1:68.7.0+build1-0ubuntu2
1:68.8.0+build2-0ubuntu0.20.04.2
1:68.10.0+build1-0ubuntu0.20.04.1

1:78.*

1:78.7.1+build1-0ubuntu0.20.04.1
1:78.8.1+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        }
    ]
}