CVE-2021-37629 : Nextcloud Richdocuments is an open source collaborative office suite. In affecte

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions there is a lack of rate limiting on the Richdocuments OCS endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. It is recommended that the Nextcloud Richdocuments app is upgraded to either 3.8.4 or 4.2.1 to resolve. For users unable to upgrade it is recommended that the Richdocuments application be disabled.

Published 2021-09-07 21:15:09

Updated 2021-09-14 16:16:36

Source GitHub, Inc.

View at NVD, CVE.org

Vulnerability category: Information leak

Products affected by CVE-2021-37629

Nextcloud » Richdocuments
Versions before (<) 3.8.4
cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*
Matching versions
Nextcloud » Richdocuments
Versions from including (>=) 4.0.0 and before (<) 4.2.1
cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-37629

EPSS FAQ

0.38%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 59 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-37629

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None
5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	GitHub, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2021-37629

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Assigned by: security-advisories@github.com (Secondary)
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-37629

https://github.com/nextcloud/richdocuments/pull/1663

Throttle on invalid share tokens by LukasReschke · Pull Request #1663 · nextcloud/richdocuments · GitHub
Third Party Advisory
https://hackerone.com/reports/1258750

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Permissions Required;Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gvvr-h36p-8mjx

Lack of ratelimit on Richdocuments OCS endpoint · Advisory · nextcloud/security-advisories · GitHub
Third Party Advisory

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Vulnerability Details : CVE-2021-37629

Products affected by CVE-2021-37629

Exploit prediction scoring system (EPSS) score for CVE-2021-37629

CVSS scores for CVE-2021-37629

CWE ids for CVE-2021-37629

References for CVE-2021-37629