CVE-2021-33510 : Plone through 5.2.4 allows remote authenticated managers to conduct SSRF attacks

Plone through 5.2.4 allows remote authenticated managers to conduct SSRF attacks via an event ical URL, to read one line of a file.

Published 2021-05-21 22:15:09

Updated 2021-05-24 18:29:35

Source MITRE

View at NVD, CVE.org

Vulnerability category: Server-side request forgery (SSRF)

Products affected by CVE-2021-33510

Plone » Plone
Versions up to, including, (<=) 5.2.4
cpe:2.3:a:plone:plone:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.08%

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

~ 34 %

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

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:L/Au:S/C:P/I:N/A:N	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	2.8	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Assigned by: nvd@nist.gov (Primary)

https://plone.org/security/hotfix/20210518/server-side-request-forgery-via-event-ical-url

Server Side Request Forgery via event ical URL — Plone: Enterprise Level CMS - Free and OpenSource - Community Driven - Secure
Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/05/22/1

oss-security - Re: Plone security hotfix 20210518
Mailing List;Third Party Advisory

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