CVE-2020-12137: XSS
First published: Fri Apr 24 2020(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Mailman | >=2.0<2.1.30 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| Debian Debian Linux | =8.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| openSUSE Backports SLE | =15.0-sp2 | |
| openSUSE Leap | =15.2 | |
| debian/mailman |
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Reference Links
- http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
- http://www.openwall.com/lists/oss-security/2020/04/24/3
- https://lists.debian.org/debian-lts-announce/2020/05/msg00002.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK/
- https://usn.ubuntu.com/4348-1/
- https://www.debian.org/security/2020/dsa-4664
- https://www.openwall.com/lists/oss-security/2020/02/24/2
- https://www.openwall.com/lists/oss-security/2020/02/24/3
- https://launchpad.net/bugs/cve/CVE-2020-12137
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4COSBBEMJYLV7WSW5QTUJUOFJFK47KK/
- http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/revision/1801
- https://security-tracker.debian.org/tracker/CVE-2020-12137
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12137
- https://nvd.nist.gov/vuln/detail/CVE-2020-12137
- https://ubuntu.com/security/CVE-2020-12137
Frequently Asked Questions
What is CVE-2020-12137?
CVE-2020-12137 is a vulnerability in GNU Mailman 2.x before version 2.1.30 that allows for XSS attacks against list-archive visitors.
How does CVE-2020-12137 affect GNU Mailman?
CVE-2020-12137 affects GNU Mailman 2.x versions before 2.1.30, allowing for potential XSS attacks against list-archive visitors.
What is the severity of CVE-2020-12137?
The severity of CVE-2020-12137 is medium, with a severity value of 6.1.
How can I fix CVE-2020-12137?
To fix CVE-2020-12137, you should update GNU Mailman to version 2.1.30 or later.
Where can I find more information about CVE-2020-12137?
You can find more information about CVE-2020-12137 in the links provided: [http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS](http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS) and [https://www.openwall.com/lists/oss-security/2020/02/24/2](https://www.openwall.com/lists/oss-security/2020/02/24/2).
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