CVE-2021-29432
MEDIUMCVSS 5.7/10EPSS 0.93%
Last modified
CVE-2021-29432 is a medium-severity vulnerability rated 5.7/10 on the CVSS scale. Sydent is a reference matrix identity server. A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
Sydent is a reference matrix identity server. A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. This could be used to construct plausible phishing emails, for example. This issue has been fixed in 4469d1d.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Matrix | Sydent | < 2.3.0 |
References
- https://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42Patch, Third Party Advisory
- https://github.com/matrix-org/sydent/releases/tag/v2.3.0Release Notes, Third Party Advisory
- https://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjxPatch, Third Party Advisory
- https://pypi.org/project/matrix-sydent/Product, Third Party Advisory
- https://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42Patch, Third Party Advisory
- https://github.com/matrix-org/sydent/releases/tag/v2.3.0Release Notes, Third Party Advisory
- https://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjxPatch, Third Party Advisory
- https://pypi.org/project/matrix-sydent/Product, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-29432?
Sydent is a reference matrix identity server. A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. This could be used to construct plausible phishing emails, for example. This issue has been fixed in 4469d1d.
How severe is CVE-2021-29432?
CVE-2021-29432 has a CVSS score of 5.7/10 (MEDIUM severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29432?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-29432?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST