CVE-2020-12137
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Gnu Mailman
PublishedApr 24, 2020
First seenApr 24, 2020
How to fix
Update
- gnu mailman2.1.30 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu mailman | 2.0 ≤ v < 2.1.30 | 2.1.30 |
| debian debian_linux | 9.0, 10.0, 8.0 | — |
| fedoraproject fedora | 31, 32 | — |
| canonical ubuntu_linux | 16.04, 18.04 | — |
| opensuse backports_sle | 15.0 | — |
| opensuse leap | 15.2 | — |
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