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CVE-2022-24889— Insufficient Verification of Data Authenticity in Nextcloud Server

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 Server 21.0.8、22.2.4 和 23.0.1 之前版本存在数据伪造问题漏洞。攻击者利用该漏洞可以诱使管理员为他们不需要的 Nextcloud 服务器启用 recommended 应用程序，从而不必要地扩大其攻击面。

CVSS 2.4 · Low EPSS 0.66% · P50

Possible ATT&CK Techniques 1 AI

T1195.002 · Compromise Software Supply Chain
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I. Basic Information for CVE-2022-24889

Vulnerability Information
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Vulnerability Title
Insufficient Verification of Data Authenticity in Nextcloud Server
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 21.0.8, 22.2.4, and 23.0.1, it is possible to trick administrators into enabling "recommended" apps for the Nextcloud server that they do not need, thus expanding their attack surface unnecessarily. This issue is fixed in versions 21.0.8 , 22.2.4, and 23.0.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 数据伪造问题漏洞
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 Server 21.0.8、22.2.4 和 23.0.1 之前版本存在数据伪造问题漏洞。攻击者利用该漏洞可以诱使管理员为他们不需要的 Nextcloud 服务器启用 recommended 应用程序，从而不必要地扩大其攻击面。
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 < 21.0.8 -

II. Public POCs for CVE-2022-24889

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III. Intelligence Information for CVE-2022-24889

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Patches & Fixes for CVE-2022-24889 (1)

Vendor Advisories for CVE-2022-24889 (2)

Other References for CVE-2022-24889 (1)

Same Patch Batch · nextcloud · 2022-04-27 · 5 CVEs total

CVE-2022-24888 4.3 MEDIUM Possible Injection in Nextcloud Server
CVE-2022-24887 4.3 MEDIUM Open Redirect in Nextcloud Talk
CVE-2022-24886 2.2 LOW Exposure of Sensitive Information to an Unauthorized Actor in com.nextcloud.client
CVE-2022-24885 2.0 LOW Improper Authentication in Nextcloud Android Files

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-345

V. Comments for CVE-2022-24889

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