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CVE-2023-25162— Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs

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存在安全漏洞，该漏洞源于存在服务器端请求伪造(SSRF)漏洞，攻击者利用该漏洞可以通过有效载荷绕过IP过滤器执行SSRF。

CVSS 5.3 · Medium EPSS 0.82% · P56
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I. Basic Information for CVE-2023-25162

Vulnerability Information
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Vulnerability Title
Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Nextcloud Server prior to 24.0.8 and 23.0.12 and Nextcloud Enterprise server prior to 24.0.8 and 23.0.12 are vulnerable to server-side request forgery (SSRF). Attackers can leverage enclosed alphanumeric payloads to bypass IP filters and gain SSRF, which would allow an attacker to read crucial metadata if the server is hosted on the AWS platform. Nextcloud Server 24.0.8 and 23.0.2 and Nextcloud Enterprise Server 24.0.8 and 23.0.12 contain a patch for this issue. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 代码问题漏洞
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存在安全漏洞，该漏洞源于存在服务器端请求伪造(SSRF)漏洞，攻击者利用该漏洞可以通过有效载荷绕过IP过滤器执行SSRF。
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 < 23.0.12 -

II. Public POCs for CVE-2023-25162

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III. Intelligence Information for CVE-2023-25162

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Patches & Fixes for CVE-2023-25162 (1)

Vendor Advisories for CVE-2023-25162 (1)

Other References for CVE-2023-25162 (1)

Same Patch Batch · nextcloud · 2023-02-13 · 4 CVEs total

CVE-2023-25160 4.1 MEDIUM IDOR Vulnerability in Nextcloud Mail
CVE-2023-25161 3.7 LOW Nextcloud Server's missing rate limiting on password reset functionality allows sending lo
CVE-2023-25159 2.3 LOW Nextcloud Server previews are accessible without a watermark

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-918

V. Comments for CVE-2023-25162

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