CVE-2019-12855
Improper Certificate Validation in Twisted
7.4
HIGH
CVSS 3.1
EPSS 0.84%
Description
In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.
How to fix CVE-2019-12855
To remediate CVE-2019-12855, upgrade the affected package to a fixed version below.
- Debian/twisted—upgrade to 18.9.0-7 or later
- —upgrade to 19.7.0rc1 or later
- —upgrade to 19.7.0rc1 or later
Is CVE-2019-12855 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 18.9.0-7
- from 0, < 19.7.0rc1
- from 0, < 19.7.0rc1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |