CVE-2019-11340: Improper Input Validation
(updated )
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.
References
- github.com/advisories/GHSA-q9h8-gpw5-c95c
- github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc
- github.com/matrix-org/sydent/compare/7c002cd...09278fb
- matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/
- nvd.nist.gov/vuln/detail/CVE-2019-11340
- twitter.com/matrixdotorg/status/1118934335963500545
Code Behaviors & Features
Detect and mitigate CVE-2019-11340 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →