Vulnerability Report

CVE-2021-41256

Title: Intent redirection in Nextcloud News Android client

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2021-41256.

CWE Category CWE-829
Published Date Nov 30, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.8 CVSS v3.1
Exploit Probability (EPSS)
1.08%

Vulnerability Summary

CVE-2021-41256: nextcloud news-android is an Android client for the Nextcloud news/feed reader app. In affected versions the Nextcloud News for Android app has a security issue by which a malicious application installed on the same device can send it an arbitrary Intent that gets reflected back, unintentionally giving read and write access to non-exported Content Providers in Nextcloud News for Android. Users should upgrade to version 0.9.9.63 or higher as soon as possible.

Impacted Vendors

V
vincent_leclercq 1
N
neuron 1
N
nextcloud 1

Reference Links

https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85 https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3 https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85 https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.8
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-41256 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N

Affected Stack

No specific products linked.