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CVE-2022-39212— Last video frame is still sent after video is disabled in a call in Nextcloud Talk

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 13.0.8之前版本和14.0.4之前版本存在信息泄露漏洞，该漏洞源于存在信息泄露问题，攻击者可以看到任何已禁用视频但选择了摄像头的参与者的最后一个视频帧。

CVSS 4.3 · Medium EPSS 0.68% · P51

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
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I. Basic Information for CVE-2022-39212

Vulnerability Information
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Vulnerability Title
Last video frame is still sent after video is disabled in a call in Nextcloud Talk
Source: CVE Program / CVE List V5
Vulnerability Description
Nextcloud Talk is an open source chat, video & audio calls client for the Nextcloud platform. In affected versions an attacker could see the last video frame of any participant who has video disabled but a camera selected. It is recommended that the Nextcloud Talk app is upgraded to 13.0.8 or 14.0.4. Users unable to upgrade should select "None" as camera before joining the call.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud Talk 信息泄露漏洞
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 13.0.8之前版本和14.0.4之前版本存在信息泄露漏洞，该漏洞源于存在信息泄露问题，攻击者可以看到任何已禁用视频但选择了摄像头的参与者的最后一个视频帧。
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 < 13.0.8 -

II. Public POCs for CVE-2022-39212

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III. Intelligence Information for CVE-2022-39212

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Patches & Fixes for CVE-2022-39212 (1)

Vendor Advisories for CVE-2022-39212 (1)

Same Patch Batch · nextcloud · 2022-09-16 · 3 CVEs total

CVE-2022-39210 3.2 LOW Access to internal files of the Nextcloud Android app
CVE-2022-39211 3.0 LOW Server-Side Request Forgery (SSRF) via potential filter bypass in Nextcloud Server

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-200

V. Comments for CVE-2022-39212

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