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CVE-2022-31120— Federated share accepting/declining is not logged in audit log 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存在安全漏洞，该漏洞源于未正确记录联合共享事件。

CVSS 2.1 · Low EPSS 0.86% · P55
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I. Basic Information for CVE-2022-31120

Vulnerability Information
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Vulnerability Title
Federated share accepting/declining is not logged in audit log in Nextcloud Server
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud server is an open source personal cloud solution. The audit log is used to get a full trail of the actions which has been incompletely populated. In affected versions federated share events were not properly logged which would allow brute force attacks to go unnoticed. This behavior exacerbates the impact of CVE-2022-31118. It is recommended that the Nextcloud Server is upgraded to 22.2.7, 23.0.4 or 24.0.0. There are no workarounds available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的日志记录
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存在安全漏洞，该漏洞源于未正确记录联合共享事件。
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 >= 23.0.0, < 23.0.4 -

II. Public POCs for CVE-2022-31120

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III. Intelligence Information for CVE-2022-31120

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Patches & Fixes for CVE-2022-31120 (1)

Vendor Advisories for CVE-2022-31120 (1)

Same Patch Batch · nextcloud · 2022-08-04 · 4 CVEs total

CVE-2022-31132 8.3 HIGH Unauthenticated SSRF in 3rd party module "cerdic/csstidy"
CVE-2022-31118 6.5 MEDIUM Missing brute force protection on cloud federation sharing in Nextcloud Server
CVE-2022-31119 3.1 LOW Password disclosure in log file in Nextcloud Mail App

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-778

V. Comments for CVE-2022-31120

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