UBUNTU-CVE-2020-6795

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Source
https://ubuntu.com/security/CVE-2020-6795
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6795.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-6795
Upstream
Downstream
Related
Published
2020-03-02T05:15:00Z
Modified
2025-09-08T16:45:58Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.

References

Affected packages

Ubuntu:16.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:68.7.0+build1-0ubuntu0.16.04.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.7.0+build1-0ubuntu0.16.04.2

Affected versions

1:38.*

1:38.3.0+build1-0ubuntu2
1:38.5.1+build2-0ubuntu1
1:38.6.0+build1-0ubuntu1
1:38.7.2+build1-0ubuntu0.16.04.1
1:38.8.0+build1-0ubuntu0.16.04.1

1:45.*

1:45.2.0+build1-0ubuntu0.16.04.1
1:45.3.0+build1-0ubuntu0.16.04.2
1:45.4.0+build1-0ubuntu0.16.04.1
1:45.5.1+build1-0ubuntu0.16.04.1
1:45.7.0+build1-0ubuntu0.16.04.1
1:45.8.0+build1-0ubuntu0.16.04.1

1:52.*

1:52.1.1+build1-0ubuntu0.16.04.1
1:52.2.1+build1-0ubuntu0.16.04.1
1:52.3.0+build1-0ubuntu0.16.04.1
1:52.4.0+build1-0ubuntu0.16.04.2
1:52.5.0+build1-0ubuntu0.16.04.1
1:52.6.0+build1-0ubuntu0.16.04.1
1:52.7.0+build1-0ubuntu0.16.04.1
1:52.8.0+build1-0ubuntu0.16.04.1
1:52.9.1+build3-0ubuntu0.16.04.1

1:60.*

1:60.2.1+build1-0ubuntu0.16.04.4
1:60.4.0+build2-0ubuntu0.16.04.1
1:60.5.1+build2-0ubuntu0.16.04.1
1:60.6.1+build2-0ubuntu0.16.04.1
1:60.7.0+build1-0ubuntu0.16.04.1
1:60.7.1+build1-0ubuntu0.16.04.1
1:60.7.2+build2-0ubuntu0.16.04.1
1:60.8.0+build1-0ubuntu0.16.04.2
1:60.9.0+build1-0ubuntu0.16.04.2
1:60.9.1+build1-0ubuntu0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.16.04.2",
            "binary_name": "xul-ext-lightning"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:68.7.0+build1-0ubuntu0.18.04.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:68.7.0+build1-0ubuntu0.18.04.1

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:68.7.0+build1-0ubuntu0.18.04.1",
            "binary_name": "xul-ext-lightning"
        }
    ],
    "availability": "No subscription required"
}