Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Mailman | >= 2.0, < 2.1.30 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 31 |
| Canonical | Ubuntu Linux | 16.04 |
| Opensuse | Backports Sle | 15.0 |
| Opensuse | Leap | 15.2 |
Related Weaknesses (CWE)
References
- http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWSThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/04/24/3Mailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00002.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://usn.ubuntu.com/4348-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4664Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/24/2Mailing ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2020/02/24/3Mailing ListThird Party Advisory
- http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWSThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/04/24/3Mailing ListThird Party Advisory
FAQ
What is CVE-2020-12137?
CVE-2020-12137 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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...
How severe is CVE-2020-12137?
CVE-2020-12137 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-12137?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Mailman, Debian Debian Linux, Fedoraproject Fedora, Canonical Ubuntu Linux, Opensuse Backports Sle.