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CVE-2020-12137

Date: April 24, 2020

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.

Severity Score

Related Resources (18)

https://lists.debian.org/debian-lts-announce/2020/05/msg00002.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12137
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK/
https://www.debian.org/security/2020/dsa-4664
https://security-tracker.debian.org/tracker/CVE-2020-12137
https://www.openwall.com/lists/oss-security/2020/02/24/2
https://www.openwall.com/lists/oss-security/2020/02/24/3
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
https://usn.ubuntu.com/4348-1/
https://nvd.nist.gov/vuln/detail/CVE-2020-12137
http://www.openwall.com/lists/oss-security/2020/04/24/3
https://access.redhat.com/security/cve/CVE-2020-12137
http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/
https://www.mend.io/vulnerability-database/CVE-2020-12137

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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