USN-5168-2

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Source
https://ubuntu.com/security/notices/USN-5168-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5168-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5168-2
Upstream
Related
Published
2021-12-01T16:45:31.291955Z
Modified
2025-10-13T04:35:41Z
Summary
thunderbird vulnerability
Details

Tavis Ormandy discovered that NSS, included with Thunderbird, incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause Thunderbird to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:18.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:78.14.0+build1-0ubuntu0.18.04.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:78.14.0+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
1:78.11.0+build1-0ubuntu0.18.04.2
1:78.13.0+build1-0ubuntu0.18.04.1
1:78.14.0+build1-0ubuntu0.18.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.18.04.2",
            "binary_name": "xul-ext-lightning"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "cves": [
            {
                "id": "CVE-2021-43527",
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "high"
                    }
                ]
            }
        ]
    }
}

Ubuntu:20.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:78.14.0+build1-0ubuntu0.20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:78.14.0+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
1:78.11.0+build1-0ubuntu0.20.04.2
1:78.13.0+build1-0ubuntu0.20.04.2
1:78.14.0+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:78.14.0+build1-0ubuntu0.20.04.2",
            "binary_name": "xul-ext-lightning"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "id": "CVE-2021-43527",
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "high"
                    }
                ]
            }
        ]
    }
}