UBUNTU-CVE-2025-3877

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Source
https://ubuntu.com/security/CVE-2025-3877
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-3877.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-3877
Related
Published
2025-05-14T17:15:00Z
Modified
2025-06-03T17:58:42Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L CVSS Calculator
Summary
[none]
Details

A crafted HTML email using mailbox:/// links can trigger automatic, unsolicited downloads of .pdf files to the user's desktop or home directory without prompting, even if auto-saving is disabled. This behavior can be abused to fill the disk with garbage data (e.g. using /dev/urandom on Linux) or to leak Windows credentials via SMB links when the email is viewed in HTML mode. While user interaction is required to download the .pdf file, visual obfuscation can conceal the download trigger. Viewing the email in HTML mode is enough to load external content. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.

References

Affected packages

Ubuntu:Pro:20.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:115.18.0+build1-0ubuntu0.20.04.1?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

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
1:78.14.0+build1-0ubuntu0.20.04.2

1:91.*

1:91.5.0+build1-0ubuntu0.20.04.1
1:91.7.0+build2-0ubuntu0.20.04.1
1:91.8.1+build1-0ubuntu0.20.04.1
1:91.9.1+build1-0ubuntu0.20.04.1
1:91.11.0+build2-0ubuntu0.20.04.1

1:102.*

1:102.2.2+build1-0ubuntu0.20.04.1
1:102.4.2+build2-0ubuntu0.20.04.1
1:102.7.1+build2-0ubuntu0.20.04.1
1:102.8.0+build2-0ubuntu0.20.04.1
1:102.9.0+build1-0ubuntu0.20.04.1
1:102.10.0+build2-0ubuntu0.20.04.1
1:102.11.0+build1-0ubuntu0.20.04.1
1:102.13.0+build1-0ubuntu0.20.04.1
1:102.15.0+build1-0ubuntu0.20.04.1
1:102.15.1+build1-0ubuntu0.20.04.1

1:115.*

1:115.3.1+build1-0ubuntu0.20.04.1
1:115.4.1+build1-0ubuntu0.20.04.1
1:115.5.0+build1-0ubuntu0.20.04.1
1:115.6.0+build2-0ubuntu0.20.04.1
1:115.8.1+build1-0ubuntu0.20.04.1
1:115.9.0+build1-0ubuntu0.20.04.1
1:115.10.1+build1-0ubuntu0.20.04.1
1:115.11.0+build2-0ubuntu0.20.04.1
1:115.12.0+build3-0ubuntu0.20.04.1
1:115.13.0+build5-0ubuntu0.20.04.1
1:115.15.0+build1-0ubuntu0.20.04.1
1:115.16.0+build2-0ubuntu0.20.04.1
1:115.18.0+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:115.18.0+build1-0ubuntu0.22.04.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:91.*

1:91.1.2+build1-0ubuntu1
1:91.3.0+build2-0ubuntu1
1:91.3.1+build1-0ubuntu1
1:91.3.2+build1-0ubuntu1
1:91.4.0+build1.1-0ubuntu1
1:91.4.0+build2-0ubuntu1
1:91.5.0+build1-0ubuntu1
1:91.5.1+build1-0ubuntu1
1:91.6.1+build1-0ubuntu1
1:91.7.0+build1-0ubuntu1
1:91.7.0+build2-0ubuntu1
1:91.8.0+build2-0ubuntu1
1:91.9.1+build1-0ubuntu0.22.04.1
1:91.11.0+build2-0ubuntu0.22.04.1

1:102.*

1:102.2.2+build1-0ubuntu0.22.04.1
1:102.4.2+build2-0ubuntu0.22.04.1
1:102.7.1+build2-0ubuntu0.22.04.1
1:102.8.0+build2-0ubuntu0.22.04.1
1:102.9.0+build1-0ubuntu0.22.04.1
1:102.10.0+build2-0ubuntu0.22.04.1
1:102.11.0+build1-0ubuntu0.22.04.1
1:102.13.0+build1-0ubuntu0.22.04.1
1:102.15.0+build1-0ubuntu0.22.04.1
1:102.15.1+build1-0ubuntu0.22.04.1

1:115.*

1:115.3.1+build1-0ubuntu0.22.04.2
1:115.4.1+build1-0ubuntu0.22.04.1
1:115.5.0+build1-0ubuntu0.22.04.1
1:115.6.0+build2-0ubuntu0.22.04.1
1:115.8.1+build1-0ubuntu0.22.04.1
1:115.9.0+build1-0ubuntu0.22.04.1
1:115.10.1+build1-0ubuntu0.22.04.1
1:115.11.0+build2-0ubuntu0.22.04.1
1:115.12.0+build3-0ubuntu0.22.04.1
1:115.13.0+build5-0ubuntu0.22.04.1
1:115.15.0+build1-0ubuntu0.22.04.1
1:115.16.0+build2-0ubuntu0.22.04.1
1:115.18.0+build1-0ubuntu0.22.04.1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@2:1snap1-0ubuntu3?arch=source&distro=oracular

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other

2:1snap1-0ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@2:1snap1-0ubuntu3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:115.*

1:115.3.1+build1-0ubuntu1
1:115.4.1+build1-0ubuntu1
1:115.4.3+build1-0ubuntu1
1:115.5.0+build1-0ubuntu1
1:115.5.1+build1-0ubuntu1
1:115.5.2+build2-0ubuntu1
1:115.6.0+build1-0ubuntu1
1:115.6.0+build2-0ubuntu1
1:115.6.1+build1-0ubuntu1
1:115.8.0+build1-0ubuntu1
1:115.8.1+build1+snap2
1:115.8.1+build1+snap3

Other

2:1snap1-0ubuntu1
2:1snap1-0ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@2:1snap1-0ubuntu3?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other

2:1snap1-0ubuntu3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}