Nextcloud Desktop Client up to 3.6.2 QML Label cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Nextcloud Desktop Client up to 3.6.2. This impacts an unknown function of the component QML Label Handler. Performing a manipulation results in cross site scripting. This vulnerability is reported as CVE-2023-23942. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Nextcloud Desktop Client up to 3.6.2 (Cloud Software). It has been classified as problematic. This affects some unknown processing of the component QML Label Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was disclosed 02/07/2023 as GHSA-64qc-vf6v-8xgg. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-23942 since 01/19/2023. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 3.6.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CNA Base Score: 5.4
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Desktop Client 3.6.3
Patch: github.com

Timelineinfo

01/19/2023 🔍
02/07/2023 +19 days 🔍
02/07/2023 +0 days 🔍
03/06/2023 +27 days 🔍

Sourcesinfo

Advisory: GHSA-64qc-vf6v-8xgg
Status: Confirmed

CVE: CVE-2023-23942 (🔍)
GCVE (CVE): GCVE-0-2023-23942
GCVE (VulDB): GCVE-100-220317

Entryinfo

Created: 02/07/2023 08:02
Updated: 03/06/2023 07:40
Changes: 02/07/2023 08:02 (53), 03/06/2023 07:40 (11)
Complete: 🔍
Cache ID: 216::103

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