CVE-2020-12137

mailman: XSS via file attachments in list archives

Published Apr 24, 2020 CVSS 3.1 · 6.1 Medium EPSS 2.3% KEV · Not listed
Description
GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2200-1 mailman security update
Debian DSA Debian DSA DSA-4664-1 mailman security update
EUVD EUVD EUVD-2020-4452 GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts. This behavior may contribute to XSS attacks against list-archive visitors, because an HTTP reply from an archive web server may lack a MIME type, and a web browser may perform MIME sniffing, conclude that the MIME type should have been text/html, and execute JavaScript code.
Ubuntu USN Ubuntu USN USN-4348-1 Mailman vulnerabilities
Ubuntu USN Ubuntu USN USN-5121-2 Mailman vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.02306}

epss

{'score': 0.00587}

Type Values Removed Values Added
Metrics epss

{'score': 0.01551}

epss

{'score': 0.02306}

Type Values Removed Values Added
Metrics epss

{'score': 0.00717}

epss

{'score': 0.01551}