CVE-2022-39212— Last video frame is still sent after video is disabled in a call in Nextcloud Talk
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/nextcloud/spreed/pull/7673x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2022-39212
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 |
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