Medium severity · published Apr 24, 2020
CVE-2020-12137
GNU Mailman 2.x before 2.1.30 uses the .obj extension for scrubbed application/octet-stream MIME parts
6.1
CVSS
2.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backports Sle · Opensuse
15.0 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32 · source: NVD
LE
Leap · Opensuse
15.2 · source: NVD
MA
Mailman · Gnu
2.0 before 2.1.30 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12137
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12137
Third Party Advisory
http://bazaar.launchpad.net/~mailman-coders/mailman/2.1/view/head:/NEWS
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00047.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00063.html
Mailing List
http://www.openwall.com/lists/oss-security/2020/04/24/3
Mailing List
https://lists.debian.org/debian-lts-announce/2020/05/msg00002.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YCMGTTOXXCVM4O6CYZLTZDX6YLYORNF/
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