Improper input validation in Matrix Sydent
CVE-2019-11340
util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, if the allowed_local_3pids option is enabled. This occurs because of potentially unwanted behavior in Python, in which an email.utils.parseaddr call on user@bad.example.net@good.example.com returns the user@bad.example.net substring.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.019 (78.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- twitter.com/matrixdotorg/status/1118934335963500545 (Third Party Advisory)
- matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/ (Release Notes, Vendor Advisory)
- github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc (Patch, Third Party Advisory)
- github.com/matrix-org/sydent/compare/7c002cd...09278fb (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11340?
- CVE-2019-11340 is a medium-severity vulnerability in Matrix Sydent, classified under Improper Input Validation. CVSS score: 5.9/10. Published 2019-04-19.
- How severe is CVE-2019-11340?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2019-11340 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.