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.
Published: 2020-04-24
Score: 6.1 Medium
EPSS: 5.2% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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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

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.02306}

epss

{'score': 0.00587}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.01551}

epss

{'score': 0.02306}


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00717}

epss

{'score': 0.01551}


Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Gnu Mailman
Opensuse Backports Sle Leap
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T11:48:58.357Z

Reserved: 2020-04-24T00:00:00.000Z

Link: CVE-2020-12137

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-04-24T13:15:11.780

Modified: 2024-11-21T04:59:19.407

Link: CVE-2020-12137

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-02-24T00:00:00Z

Links: CVE-2020-12137 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses