Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-39957

Severity CVSS v4.0:
Pending analysis
Type:
CWE-22 Path Traversal
Publication date:
10/08/2023
Last modified:
16/08/2023

Description

Nextcloud Talk Android allows users to place video and audio calls through Nextcloud on Android. Prior to version 17.0.0, an unprotected intend allowed malicious third party apps to trick the Talk Android app into writing files outside of its intended cache directory. Nextcloud Talk Android version 17.0.0 has a patch for this issue. No known workarounds are available.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nextcloud:talk:*:*:*:*:*:android:*:* 17.0.0 (excluding)
cpe:2.3:a:nextcloud:talk:17.0.0:rc1:*:*:*:android:*:*
cpe:2.3:a:nextcloud:talk:17.0.0:rc2:*:*:*:android:*:*
cpe:2.3:a:nextcloud:talk:17.0.0:rc3:*:*:*:android:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools