CVE-2019-12855
HIGH7.4EPSS 0.84%Improper Certificate Validation in Twisted
Published: 8/16/2019Modified: 4/28/2026
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.
Affected packages (3)
- Debian/twistedfrom 0, < 18.9.0-7
- PyPI/twistedfrom 0, < 19.7.0rc1
- PyPI/twistedfrom 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 |
References (17)
- ADVISORYhttps://github.com/advisories/GHSA-65rm-h285-5cc5
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2019-12855
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2019-12855
- PATCHhttps://github.com/twisted/twisted
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00013.html
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00028.html
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2019-129.yaml
- WEBhttps://github.com/twisted/twisted/pull/1147
- WEBhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ/
- WEBhttps://twistedmatrix.com/trac/ticket/9561
- WEBhttps://usn.ubuntu.com/4308-1
- WEBhttps://usn.ubuntu.com/4308-1/
- WEBhttps://usn.ubuntu.com/4308-2
- WEBhttps://usn.ubuntu.com/4308-2/
- WEBhttps://www.oracle.com/security-alerts/cpuapr2020.html