CVE-2023-33182— Nextcloud Contacts photos only sanitized if mime type is all lower case
Quick assessment
Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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 Contacts 5.0.3及之前版本或4.2.4及之前版本存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2023-33182
Vulnerability Information
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Vulnerability Title
Nextcloud Contacts photos only sanitized if mime type is all lower case
Source: CVE Program / CVE List V5
Vulnerability Description
Contacts app for Nextcloud easily syncs contacts from various devices with your Nextcloud and allows editing. The unsanitized SVG is converted to a JavaScript blob (in memory data) that the Avatar can't render. Due to this constellation the missing sanitization does not seem to be exploitable. It is recommended that the Contacts app is upgraded to 5.0.3 or 4.2.4
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud Contacts 安全漏洞
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 Contacts 5.0.3及之前版本或4.2.4及之前版本存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 | >= 4.1.0, < 4.2.4 | - |
|
II. Public POCs for CVE-2023-33182
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-33182 (1)
-
https://github.com/nextcloud/contacts/pull/3199 x_refsource_MISC
Vendor Advisories for CVE-2023-33182 (1)
Other References for CVE-2023-33182 (1)
-
https://hackerone.com/reports/1789602 x_refsource_MISC
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V. Comments for CVE-2023-33182
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