Vulnerability · Published Mar 8, 2022 · Assigned by GitHub_M

CVE-2021-41180Geolocation preview links can be set to arbitrary links in nextcloud talk

Medium 4.7

In plain English

A medium-severity open redirect in security-advisories from nextcloud. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)1.0%top 35.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	< 12.1.2

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4fxr-mrw2-cq92 x_refsource_CONFIRM
https://github.com/nextcloud/spreed/pull/6239 x_refsource_MISC
https://hackerone.com/reports/1337178 x_refsource_MISC