medium5.9
CVE-2019-11340
Matrix Sydent mishandles emails
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | matrix-sydent | < 1.0.2 | 1.0.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Matrix | Sydent | before 1.0.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/matrix-org/sydent/commit/4e1cfff53429c49c87d5c457a18ed435520044fc
- https://github.com/matrix-org/sydent/compare/7c002cd...09278fb
- https://matrix.org/blog/2019/04/18/security-update-sydent-1-0-2/
- https://twitter.com/matrixdotorg/status/1118934335963500545
- https://github.com/advisories/GHSA-q9h8-gpw5-c95c
- https://nvd.nist.gov/vuln/detail/CVE-2019-11340