Auth bypass in Nextcloud Security-Advisories
CVE-2021-41181
Nextcloud talk is a self hosting messaging service. In versions prior to 12.3.0 the Nextcloud Android Talk application did not properly detect the lockscreen state when a call was incoming. If an attacker got physical access to the locked phone, and the victim received a phone call the attacker could gain access to the chat messages and files of the user. It is recommended that the Nextcloud Android Talk App is upgraded to 12.3.0. There are no known workarounds.
Vulnerability class: Information Disclosure
EPSS: 0.003 (23.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Nextcloud Security-advisories — versions < 12.3.0
- Nextcloud Talk
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-41181?
- CVE-2021-41181 is a low-severity vulnerability in Nextcloud Security-Advisories, classified under Information Disclosure. CVSS score: 2.4/10. Published 2022-03-08.
- How severe is CVE-2021-41181?
- Low severity. CVSS v3 base score is 2.4 out of 10.
- Is CVE-2021-41181 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.