CVE-2020-12137

mailman: XSS via file attachments in list archives

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

GNU Mailman versiones 2.x anteriores a la versión 2.1.30, usa una extensión .obj para partes MIME de aplications/octet-stream. Este comportamiento puede contribuir a ataques de tipo XSS contra visitantes de archivos de lista, porque una respuesta HTTP desde un servidor web de archivo puede carecer de un tipo MIME, y un navegador web puede realizar rastreo del MIME, concluir que el tipo MIME debería haber sido text/html, y ejecutar código JavaScript.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-24 CVE Reserved
2020-04-24 CVE Published
2024-08-04 CVE Updated
2024-08-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (13)

URL	Tag	Source
http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS	Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/04/24/3	Mailing List
https://lists.debian.org/debian-lts-announce/2020/05/msg00002.html	Mailing List
https://www.openwall.com/lists/oss-security/2020/02/24/2	Mailing List
https://www.openwall.com/lists/oss-security/2020/02/24/3	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK	2023-11-07
https://usn.ubuntu.com/4348-1	2023-11-07
https://www.debian.org/security/2020/dsa-4664	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-12137	2020-11-04
https://bugzilla.redhat.com/show_bug.cgi?id=1830007	2020-11-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnu Search vendor "Gnu"		Mailman Search vendor "Gnu" for product "Mailman"				>= 2.0 < 2.1.30 Search vendor "Gnu" for product "Mailman" and version " >= 2.0 < 2.1.30"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Opensuse Search vendor "Opensuse"		Backports Sle Search vendor "Opensuse" for product "Backports Sle"				15.0 Search vendor "Opensuse" for product "Backports Sle" and version "15.0"		sp2		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				15.2 Search vendor "Opensuse" for product "Leap" and version "15.2"		-		Affected