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CVE-2022-24888— Possible Injection 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 20.0.14.4、21.0.8、22.2.4 和 23.0.1之前版本存在安全漏洞，该漏洞源于应用允许可以创建具有前导和尾随 、 、 和 v 字符的文件和文件夹。攻击者利用该漏洞通过参数注入实现拒绝服务。

CVSS 4.3 · Medium EPSS 1.32% · P70
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I. Basic Information for CVE-2022-24888

Vulnerability Information
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Vulnerability Title
Possible Injection 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 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1, it is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. This issue is fixed in versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1. There are currently no known workarounds.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 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 Server 20.0.14.4、21.0.8、22.2.4 和 23.0.1之前版本存在安全漏洞，该漏洞源于应用允许可以创建具有前导和尾随 、 、 和 v 字符的文件和文件夹。攻击者利用该漏洞通过参数注入实现拒绝服务。
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 < 20.0.14.4 -

II. Public POCs for CVE-2022-24888

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III. Intelligence Information for CVE-2022-24888

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Patches & Fixes for CVE-2022-24888 (1)

Vendor Advisories for CVE-2022-24888 (2)

Other References for CVE-2022-24888 (1)

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

CVE-2022-24887 4.3 MEDIUM Open Redirect in Nextcloud Talk
CVE-2022-24889 2.4 LOW Insufficient Verification of Data Authenticity in Nextcloud Server
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-74

V. Comments for CVE-2022-24888

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