OAuth2 authorization codes are valid indefinetly in Nextcloud server
CVE-2024-22403

3LOW

Key Information:

Vendor

Nextcloud
Status
Security-advisories
Vendor
CVE Published:
18 January 2024

What is CVE-2024-22403?

Nextcloud server is a self hosted personal cloud system. In affected versions OAuth codes did not expire. When an attacker would get access to an authorization code they could authenticate at any time using the code. As of version 28.0.0 OAuth codes are invalidated after 10 minutes and will no longer be authenticated. To exploit this vulnerability an attacker would need to intercept an OAuth code from a user session. It is recommended that the Nextcloud Server is upgraded to 28.0.0. There are no known workarounds for this vulnerability.

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Deploy the Patch

Affected Version(s)

security-advisories < 28.0.0

References

https://github.com/nextcloud/security-advisories/security...
x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/40766
x_refsource_MISC
https://hackerone.com/reports/1784162
x_refsource_MISC

CVSS V3.1

Score:
3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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