6.3
CVE-2021-21392
- EPSS 0.2%
- Veröffentlicht 12.04.2021 22:15:13
- Zuletzt bearbeitet 21.11.2024 05:48:15
- Quelle security-advisories@github.com
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Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 requests to user provided domains were not restricted to external IP addresses when transitional IPv6 addresses were used. Outbound requests to federation, identity servers, when calculating the key validity for third-party invite events, sending push notifications, and generating URL previews are affected. This could cause Synapse to make requests to internal infrastructure on dual-stack networks. See referenced GitHub security advisory for details and workarounds.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Fedoraproject ≫ Fedora Version34
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.2% | 0.391 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 6.3 | 2.1 | 4.2 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N
|
| nvd@nist.gov | 4.9 | 6.8 | 4.9 |
AV:N/AC:M/Au:S/C:P/I:P/A:N
|
| security-advisories@github.com | 6.3 | 2.1 | 4.2 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N
|
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.