CVE-2023-23942— Self reflected HTML injection in Desktop client
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I. Basic Information for CVE-2023-23942
Vulnerability Information
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Vulnerability Title
Self reflected HTML injection in Desktop client
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud Desktop Client 3.6.3之前版本存在跨站脚本漏洞，该漏洞源于缺少对qml标签的清理，从而导致javascript注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nextcloud | security-advisories | < 3.6.3 | - |
II. Public POCs for CVE-2023-23942
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://hackerone.com/reports/1788598x_refsource_MISC
- https://github.com/nextcloud/desktop/pull/5233x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-23942
Same Patch Batch · nextcloud · 2023-02-06 · 3 CVEs total
| CVE-2023-23943 | 5.0 MEDIUM | Blind SSRF via server URL input in the Nextcloud Mail app |
| CVE-2023-23944 | 2.0 LOW | Nexcloud Mail app temporarily stores cleartext password in database |
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V. Comments for CVE-2023-23942
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