Vulnerability CVE-2021-29432
Published: 2021-04-15

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.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.5/10
2.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Matrix -> Sydent 

 References:
https://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjx
https://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42
https://pypi.org/project/matrix-sydent/
https://github.com/matrix-org/sydent/releases/tag/v2.3.0
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