CVE-2019-16935

MEDIUM severity · CVSS 6.1 · Cross-site scripting (XSS)

6.1CVSS MEDIUM

Summary

The documentation XML-RPC server in Python through 2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has XSS via the server_title field. This occurs in Lib/DocXMLRPCServer.py in Python 2.x, and in Lib/xmlrpc/server.py in Python 3.x. If set_server_title is called with untrusted input, arbitrary JavaScript can be delivered to clients that visit the http URL for this server.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

Confidentiality impactLow

Integrity impactLow

Availability impactNone

Exploit probability (EPSS)2%

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products we track (1)

Python

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

NVD record
https://bugs.python.org/issue38243Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00012.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00021.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlAdvisory
https://github.com/python/cpython/blob/35c0809158be7feae4c4f877a08b93baea2d8291/Lib/xmlrpc/server.py#L897Advisory
https://github.com/python/cpython/blob/e007860b8b3609ce0bc62b1780efaa06241520bd/Lib/DocXMLRPCServer.py#L213Advisory