Vulnerability Report

CVE-2023-23942

Title: HTML Sanitization Bypass in Desktop Client UI

JavaScript Injection

Proof Of Concept

No public PoC currently indexed for CVE-2023-23942.

CWE Category CWE-79
Published Date Feb 06, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.4 CVSS v3.1
Exploit Probability (EPSS)
1.67%

Vulnerability Summary

CVE-2023-23942: The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer. Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are no known workarounds for this issue.

Impacted Vendors

N
nextcloud 1
A
avira 1

Reference Links

https://github.com/nextcloud/desktop/pull/5233 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-64qc-vf6v-8xgg https://hackerone.com/reports/1788598 https://github.com/nextcloud/desktop/pull/5233 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-64qc-vf6v-8xgg https://hackerone.com/reports/1788598
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.4
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-23942 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 NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.