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CVE-2022-41926— Nextcloud Talk Android broadcast incorrect permission handling

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 Talk是德国Nextcloud公司的一款自托管的本地音频/视频和聊天通信服务。 Nextcloud Talk 14.1.0之前版本存在安全漏洞，该漏洞源于接收器不受broadcastPermission的保护，允许恶意应用程序监控通信。

CVSS 3.3 · Low EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
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I. Basic Information for CVE-2022-41926

Vulnerability Information
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Vulnerability Title
Nextcloud Talk Android broadcast incorrect permission handling
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcould talk android is the android OS implementation of the nextcloud talk chat system. In affected versions the receiver is not protected by broadcastPermission allowing malicious apps to monitor communication. It is recommended that the Nextcloud Talk Android is upgraded to 14.1.0. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud Talk 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud Talk是德国Nextcloud公司的一款自托管的本地音频/视频和聊天通信服务。 Nextcloud Talk 14.1.0之前版本存在安全漏洞，该漏洞源于接收器不受broadcastPermission的保护，允许恶意应用程序监控通信。
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 < 14.1.0 -

II. Public POCs for CVE-2022-41926

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III. Intelligence Information for CVE-2022-41926

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Patches & Fixes for CVE-2022-41926 (1)

Vendor Advisories for CVE-2022-41926 (1)

Other References for CVE-2022-41926 (1)

Same Patch Batch · nextcloud · 2022-11-25 · 8 CVEs total

CVE-2022-39331 4.6 MEDIUM Cross-site Scripting (XSS) in Nexcloud Desktop Client
CVE-2022-39332 4.6 MEDIUM Cross-site scripting (XSS) in Nextcloud Desktop Client
CVE-2022-39333 4.6 MEDIUM Cross-site scripting (XSS) in Nextcloud Desktop Client
CVE-2022-39339 4.3 MEDIUM Cleartext Transmission of Sensitive Information in user_oidc
CVE-2022-39334 3.9 LOW nextcloudcmd incorrectly trusts bad TLS certificates
CVE-2022-39338 3.5 LOW Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc
CVE-2022-39346 3.5 LOW Missing length validation of user displayname in nextcloud server

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-732

V. Comments for CVE-2022-41926

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