Home/CVE/In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with T
CVE

CVE-2019-12855

In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with T

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.

HIGH · CVSS 7.4 EPSS 0.00841
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

1
twisted<= 19.2.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI twisted CRITICAL fixed in 19.7.0rc1
▣

Scoring & Timeline

7.4
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Jun 2019 · 12:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:11212-1
msrcCVE-2019-12855
usnUSN-4308-2
usnUSN-4308-1
suse-csafSUSE-SU-2019:2453-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00028.html
https://github.com/twisted/twisted/pull/1147PatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ/
https://twistedmatrix.com/trac/ticket/9561Vendor Advisory
https://usn.ubuntu.com/4308-1/
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