CVE-2025-3522

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

References

Affected packages

Debian:11 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:78.*

1:78.12.0-1

1:78.13.0-1~deb9u1

1:78.13.0-1~deb10u1

1:78.13.0-1~deb11u1

1:78.13.0-1

1:78.14.0-1~deb9u1

1:78.14.0-1~deb10u1

1:78.14.0-1~deb11u1

1:78.14.0-1

1:84.*

1:84.0~b3-1

1:85.*

1:85.0~b3-1

1:86.*

1:86.0~b3-1

1:88.*

1:88.0~b2-1

1:89.*

1:89.0~b2-1

1:90.*

1:90.0~b2-1

1:91.*

1:91.0~b1-1

1:91.0~b3-1

1:91.0~b5-1

1:91.0-1

1:91.0.2-1

1:91.1.0-1

1:91.1.1-1

1:91.2.0-1

1:91.2.1-1

1:91.3.0-1

1:91.3.2-1

1:91.4.0-1

1:91.4.1-1~deb9u1

1:91.4.1-1~deb10u1

1:91.4.1-1~deb11u1

1:91.4.1-1

1:91.5.0-1~deb9u1

1:91.5.0-1

1:91.5.0-2~deb10u1

1:91.5.0-2~deb11u1

1:91.5.0-2

1:91.5.1-1

1:91.6.0-1~deb9u1

1:91.6.0-1~deb10u1

1:91.6.0-1~deb11u1

1:91.6.0-1

1:91.6.1-1~deb9u1

1:91.6.1-1~deb10u1

1:91.6.1-1~deb11u1

1:91.6.1-1

1:91.6.2-1~deb9u1

1:91.6.2-1~deb10u1

1:91.6.2-1~deb11u1

1:91.6.2-1

1:91.7.0-1

1:91.7.0-2~deb9u1

1:91.7.0-2~deb10u1

1:91.7.0-2~deb11u1

1:91.7.0-2

1:91.8.0-1~deb9u1

1:91.8.0-1~deb10u1

1:91.8.0-1~deb11u1

1:91.8.0-1

1:91.8.1-1

1:91.9.0-1~deb9u1

1:91.9.0-1~deb10u1

1:91.9.0-1~deb11u1

1:91.9.0-1

1:91.10.0-1~deb9u1

1:91.10.0-1~deb10u1

1:91.10.0-1~deb11u1

1:91.10.0-1

1:91.11.0-1~deb10u1

1:91.11.0-1~deb11u1

1:91.11.0-1

1:91.12.0-1~deb10u1

1:91.12.0-1~deb11u1

1:91.13.0-1~deb10u1

1:91.13.0-1~deb11u1

1:102.*

1:102.0~b4-1

1:102.0~b7-1

1:102.0.1-1

1:102.0.2-1

1:102.1.0-1

1:102.1.1-1

1:102.1.2-1

1:102.2.0-1

1:102.2.1-1

1:102.2.2-1

1:102.3.0-1~deb10u1

1:102.3.0-1~deb11u1

1:102.3.0-1

1:102.3.1-1

1:102.3.2-1

1:102.3.3-1

1:102.4.0-1~deb10u1

1:102.4.0-1~deb11u1

1:102.4.0-1

1:102.4.1-1

1:102.5.0-1~deb10u1

1:102.5.0-1~deb11u1

1:102.5.0-1

1:102.5.1-1

1:102.6.0-1~deb10u1

1:102.6.0-1~deb11u1

1:102.6.0-1

1:102.7.1-1

1:102.7.1+1-1

1:102.7.2-1

1:102.8.0-1~deb10u1

1:102.8.0-1~deb11u1

1:102.8.0-1

1:102.9.0-1~deb10u1

1:102.9.0-1~deb11u1

1:102.9.0-1

1:102.9.1-1

1:102.10.0-1~deb10u1

1:102.10.0-1~deb11u1

1:102.10.0-1

1:102.11.0-1~deb10u1

1:102.11.0-1~deb11u1

1:102.11.0-1

1:102.12.0-1~deb10u1

1:102.12.0-1~deb11u1

1:102.12.0-1~deb12u1

1:102.12.0-1

1:102.13.0-1~deb10u1

1:102.13.0-1~deb11u1

1:102.13.0-1~deb12u1

1:102.13.0-1

1:102.13.1-1~deb10u1

1:102.13.1-1~deb11u1

1:102.13.1-1~deb12u1

1:102.13.1-1

1:102.14.0-1~deb10u1

1:102.14.0-1~deb11u1

1:102.14.0-1~deb12u1

1:102.15.0-1~deb10u1

1:102.15.0-1~deb11u1

1:102.15.0-1~deb12u1

1:102.15.1-1~deb10u1

1:102.15.1-1~deb11u1

1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1

1:115.0~b6-1

1:115.0-1

1:115.0.1-1

1:115.0.1-2

1:115.1.0-1

1:115.1.1-1

1:115.2.0-1

1:115.2.2-1

1:115.3.0-1~deb12u1

1:115.3.0-1

1:115.3.1-1~deb10u1

1:115.3.1-1~deb11u1

1:115.3.1-1~deb12u1

1:115.3.1-1

1:115.4.1-1~deb10u1

1:115.4.1-1~deb11u1

1:115.4.1-1~deb12u1

1:115.4.1-1

1:115.5.0-1~deb10u1

1:115.5.0-1~deb11u1

1:115.5.0-1~deb12u1

1:115.5.0-1

1:115.5.1-1

1:115.5.2-1

1:115.6.0-1~deb10u1

1:115.6.0-1~deb11u1

1:115.6.0-1~deb12u1

1:115.6.0-1

1:115.7.0-1~deb10u1

1:115.7.0-1~deb11u1

1:115.7.0-1~deb12u1

1:115.7.0-1

1:115.8.0-1~deb10u1

1:115.8.0-1~deb11u1

1:115.8.0-1~deb12u1

1:115.8.0-1

1:115.8.1-1

1:115.9.0-1~deb10u1

1:115.9.0-1~deb11u1

1:115.9.0-1~deb12u1

1:115.9.0-1

1:115.10.1-1~deb10u1

1:115.10.1-1~deb11u1

1:115.10.1-1~deb12u1

1:115.10.1-1

1:115.11.0-1~deb10u1

1:115.11.0-1~deb11u1

1:115.11.0-1~deb12u1

1:115.11.0-1

1:115.12.0-1~deb10u1

1:115.12.0-1~deb11u1

1:115.12.0-1~deb12u1

1:115.12.0-1

1:115.13.0-1~deb11u1

1:115.13.0-1~deb12u1

1:115.13.0-1

1:115.14.0-1~deb11u1

1:115.14.0-1~deb12u1

1:115.15.0-1~deb11u1

1:115.15.0-1~deb12u1

1:115.16.0esr-1~deb11u1

1:115.16.0esr-1~deb12u1

1:116.*

1:116.0~b7-1

1:117.*

1:117.0~b5-1

1:120.*

1:120.0~b1-1

1:121.*

1:121.0~b3-1

1:122.*

1:122.0~b2-1

1:124.*

1:124.0~b5-1

1:125.*

1:125.0~b3-1

1:127.*

1:127.0~b5-1

1:128.*

1:128.0~b5-1

1:128.0esr-1

1:128.1.0esr-1

1:128.1.1esr-1

1:128.2.0esr-1

1:128.2.1esr-1

1:128.2.3esr-1

1:128.3.0esr-1

1:128.3.2esr-1

1:128.4.0esr-1~deb11u1

1:128.4.0esr-1~deb12u1

1:128.4.0esr-1

1:128.4.2esr-1

1:128.4.3esr-1~deb11u1

1:128.4.3esr-1~deb12u1

1:128.4.3esr-1

1:128.5.0esr-1~deb11u1

1:128.5.0esr-1~deb12u1

1:128.5.0esr-1

1:128.5.2esr-1

1:128.6.0esr-1~deb11u1

1:128.6.0esr-1~deb12u1

1:128.6.0esr-1

1:128.7.0esr-1~deb11u1

1:128.7.0esr-1~deb12u1

1:128.7.0esr-1

1:128.8.0esr-1~deb11u1

1:128.8.0esr-1~deb12u1

1:128.8.0esr-1

1:128.9.0esr-1~deb11u1

1:128.9.0esr-1~deb12u1

1:128.9.0esr-1

1:128.10.0esr-1~deb11u1

1:128.10.0esr-1

1:129.*

1:129.0~b6-1

1:130.*

1:130.0~b3-1

1:132.*

1:132.0~b6-1

1:135.*

1:135.0-1

1:136.*

1:136.0-1

1:137.*

1:137.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:128.10.0esr-1~deb12u1

Affected versions

1:102.*

1:102.11.0-1

1:102.12.0-1~deb10u1

1:102.12.0-1~deb11u1

1:102.12.0-1~deb12u1

1:102.12.0-1

1:102.13.0-1~deb10u1

1:102.13.0-1~deb11u1

1:102.13.0-1~deb12u1

1:102.13.0-1

1:102.13.1-1~deb10u1

1:102.13.1-1~deb11u1

1:102.13.1-1~deb12u1

1:102.13.1-1

1:102.14.0-1~deb10u1

1:102.14.0-1~deb11u1

1:102.14.0-1~deb12u1

1:102.15.0-1~deb10u1

1:102.15.0-1~deb11u1

1:102.15.0-1~deb12u1

1:102.15.1-1~deb10u1

1:102.15.1-1~deb11u1

1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1

1:115.0~b6-1

1:115.0-1

1:115.0.1-1

1:115.0.1-2

1:115.1.0-1

1:115.1.1-1

1:115.2.0-1

1:115.2.2-1

1:115.3.0-1~deb12u1

1:115.3.0-1

1:115.3.1-1~deb10u1

1:115.3.1-1~deb11u1

1:115.3.1-1~deb12u1

1:115.3.1-1

1:115.4.1-1~deb10u1

1:115.4.1-1~deb11u1

1:115.4.1-1~deb12u1

1:115.4.1-1

1:115.5.0-1~deb10u1

1:115.5.0-1~deb11u1

1:115.5.0-1~deb12u1

1:115.5.0-1

1:115.5.1-1

1:115.5.2-1

1:115.6.0-1~deb10u1

1:115.6.0-1~deb11u1

1:115.6.0-1~deb12u1

1:115.6.0-1

1:115.7.0-1~deb10u1

1:115.7.0-1~deb11u1

1:115.7.0-1~deb12u1

1:115.7.0-1

1:115.8.0-1~deb10u1

1:115.8.0-1~deb11u1

1:115.8.0-1~deb12u1

1:115.8.0-1

1:115.8.1-1

1:115.9.0-1~deb10u1

1:115.9.0-1~deb11u1

1:115.9.0-1~deb12u1

1:115.9.0-1

1:115.10.1-1~deb10u1

1:115.10.1-1~deb11u1

1:115.10.1-1~deb12u1

1:115.10.1-1

1:115.11.0-1~deb10u1

1:115.11.0-1~deb11u1

1:115.11.0-1~deb12u1

1:115.11.0-1

1:115.12.0-1~deb10u1

1:115.12.0-1~deb11u1

1:115.12.0-1~deb12u1

1:115.12.0-1

1:115.13.0-1~deb11u1

1:115.13.0-1~deb12u1

1:115.13.0-1

1:115.14.0-1~deb11u1

1:115.14.0-1~deb12u1

1:115.15.0-1~deb11u1

1:115.15.0-1~deb12u1

1:115.16.0esr-1~deb11u1

1:115.16.0esr-1~deb12u1

1:116.*

1:116.0~b7-1

1:117.*

1:117.0~b5-1

1:120.*

1:120.0~b1-1

1:121.*

1:121.0~b3-1

1:122.*

1:122.0~b2-1

1:124.*

1:124.0~b5-1

1:125.*

1:125.0~b3-1

1:127.*

1:127.0~b5-1

1:128.*

1:128.0~b5-1

1:128.0esr-1

1:128.1.0esr-1

1:128.1.1esr-1

1:128.2.0esr-1

1:128.2.1esr-1

1:128.2.3esr-1

1:128.3.0esr-1

1:128.3.2esr-1

1:128.4.0esr-1~deb11u1

1:128.4.0esr-1~deb12u1

1:128.4.0esr-1

1:128.4.2esr-1

1:128.4.3esr-1~deb11u1

1:128.4.3esr-1~deb12u1

1:128.4.3esr-1

1:128.5.0esr-1~deb11u1

1:128.5.0esr-1~deb12u1

1:128.5.0esr-1

1:128.5.2esr-1

1:128.6.0esr-1~deb11u1

1:128.6.0esr-1~deb12u1

1:128.6.0esr-1

1:128.7.0esr-1~deb11u1

1:128.7.0esr-1~deb12u1

1:128.7.0esr-1

1:128.8.0esr-1~deb11u1

1:128.8.0esr-1~deb12u1

1:128.8.0esr-1

1:128.9.0esr-1~deb11u1

1:128.9.0esr-1~deb12u1

1:128.9.0esr-1

1:128.10.0esr-1~deb11u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:102.*

1:102.11.0-1

1:102.12.0-1~deb10u1

1:102.12.0-1~deb11u1

1:102.12.0-1~deb12u1

1:102.12.0-1

1:102.13.0-1~deb10u1

1:102.13.0-1~deb11u1

1:102.13.0-1~deb12u1

1:102.13.0-1

1:102.13.1-1~deb10u1

1:102.13.1-1~deb11u1

1:102.13.1-1~deb12u1

1:102.13.1-1

1:102.14.0-1~deb10u1

1:102.14.0-1~deb11u1

1:102.14.0-1~deb12u1

1:102.15.0-1~deb10u1

1:102.15.0-1~deb11u1

1:102.15.0-1~deb12u1

1:102.15.1-1~deb10u1

1:102.15.1-1~deb11u1

1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1

1:115.0~b6-1

1:115.0-1

1:115.0.1-1

1:115.0.1-2

1:115.1.0-1

1:115.1.1-1

1:115.2.0-1

1:115.2.2-1

1:115.3.0-1~deb12u1

1:115.3.0-1

1:115.3.1-1~deb10u1

1:115.3.1-1~deb11u1

1:115.3.1-1~deb12u1

1:115.3.1-1

1:115.4.1-1~deb10u1

1:115.4.1-1~deb11u1

1:115.4.1-1~deb12u1

1:115.4.1-1

1:115.5.0-1~deb10u1

1:115.5.0-1~deb11u1

1:115.5.0-1~deb12u1

1:115.5.0-1

1:115.5.1-1

1:115.5.2-1

1:115.6.0-1~deb10u1

1:115.6.0-1~deb11u1

1:115.6.0-1~deb12u1

1:115.6.0-1

1:115.7.0-1~deb10u1

1:115.7.0-1~deb11u1

1:115.7.0-1~deb12u1

1:115.7.0-1

1:115.8.0-1~deb10u1

1:115.8.0-1~deb11u1

1:115.8.0-1~deb12u1

1:115.8.0-1

1:115.8.1-1

1:115.9.0-1~deb10u1

1:115.9.0-1~deb11u1

1:115.9.0-1~deb12u1

1:115.9.0-1

1:115.10.1-1~deb10u1

1:115.10.1-1~deb11u1

1:115.10.1-1~deb12u1

1:115.10.1-1

1:115.11.0-1~deb10u1

1:115.11.0-1~deb11u1

1:115.11.0-1~deb12u1

1:115.11.0-1

1:115.12.0-1~deb10u1

1:115.12.0-1~deb11u1

1:115.12.0-1~deb12u1

1:115.12.0-1

1:115.13.0-1~deb11u1

1:115.13.0-1~deb12u1

1:115.13.0-1

1:115.14.0-1~deb11u1

1:115.14.0-1~deb12u1

1:115.15.0-1~deb11u1

1:115.15.0-1~deb12u1

1:115.16.0esr-1~deb11u1

1:115.16.0esr-1~deb12u1

1:116.*

1:116.0~b7-1

1:117.*

1:117.0~b5-1

1:120.*

1:120.0~b1-1

1:121.*

1:121.0~b3-1

1:122.*

1:122.0~b2-1

1:124.*

1:124.0~b5-1

1:125.*

1:125.0~b3-1

1:127.*

1:127.0~b5-1

1:128.*

1:128.0~b5-1

1:128.0esr-1

1:128.1.0esr-1

1:128.1.1esr-1

1:128.2.0esr-1

1:128.2.1esr-1

1:128.2.3esr-1

1:128.3.0esr-1

1:128.3.2esr-1

1:128.4.0esr-1~deb11u1

1:128.4.0esr-1~deb12u1

1:128.4.0esr-1

1:128.4.2esr-1

1:128.4.3esr-1~deb11u1

1:128.4.3esr-1~deb12u1

1:128.4.3esr-1

1:128.5.0esr-1~deb11u1

1:128.5.0esr-1~deb12u1

1:128.5.0esr-1

1:128.5.2esr-1

1:128.6.0esr-1~deb11u1

1:128.6.0esr-1~deb12u1

1:128.6.0esr-1

1:128.7.0esr-1~deb11u1

1:128.7.0esr-1~deb12u1

1:128.7.0esr-1

1:128.8.0esr-1~deb11u1

1:128.8.0esr-1~deb12u1

1:128.8.0esr-1

1:128.9.0esr-1~deb11u1

1:128.9.0esr-1~deb12u1

1:128.9.0esr-1

1:128.10.0esr-1~deb11u1

1:128.10.0esr-1

1:129.*

1:129.0~b6-1

1:130.*

1:130.0~b3-1

1:132.*

1:132.0~b6-1

1:135.*

1:135.0-1

1:136.*

1:136.0-1

1:137.*

1:137.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}