CVE-2021-41180 : Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an

Nextcloud talk is a self hosting messaging service. In versions prior 12.1.2 an attacker is able to control the link of a geolocation preview in the Nextcloud Talk application due to a lack of validation on the link. This could result in an open-redirect, but required user interaction. This only affected users of the Android Talk client. It is recommended that the Nextcloud Talk App is upgraded to 12.1.2. There are no known workarounds.

Published 2022-03-08 18:15:08

Updated 2022-03-15 16:18:40

Source GitHub, Inc.

View at NVD, CVE.org

Vulnerability category: Open redirect

Products affected by CVE-2021-41180

Nextcloud » Talk » For Android
Versions before (<) 12.1.2
cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-41180

EPSS FAQ

0.23%

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

~ 46 %

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

CVSS scores for CVE-2021-41180

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:N/AC:H/Au:N/C:P/I:P/A:N	4.9	4.9	NIST
Access Vector: Network Access Complexity: High Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None
4.7	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	1.6	2.7	GitHub, Inc.
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2021-41180

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.

Assigned by: security-advisories@github.com (Primary)

References for CVE-2021-41180

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4fxr-mrw2-cq92

Geolocation preview links can be set to arbitrary links · Advisory · nextcloud/security-advisories · GitHub
Issue Tracking;Third Party Advisory
https://hackerone.com/reports/1337178

#1337178 objectId in share location can be set to open arbitrary URL or Deeplinks
Exploit;Patch;Third Party Advisory
https://github.com/nextcloud/spreed/pull/6239

Add some validation to the geo location id by nickvergessen · Pull Request #6239 · nextcloud/spreed · GitHub
Patch;Third Party Advisory

Jump to

Vulnerability Details : CVE-2021-41180

Products affected by CVE-2021-41180

Exploit prediction scoring system (EPSS) score for CVE-2021-41180

CVSS scores for CVE-2021-41180

CWE ids for CVE-2021-41180

References for CVE-2021-41180