Attackers can obtain Cloud Key information from the Dahua Web P2P control in specific ways. Cloud Key is used to authenticate the connection between the client tool and the platform. An attacker may use the leaked Cloud Key to impersonate the client to connect to the platform, resulting in additional consumption of platform server resources.
Vulnerability Score（CVSS V3.1 http://www.first.org/cvss/specification-document）:
Base Score：5.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Score：4.6 E:P/RL:O/RC:C
Affected Products & Fix Software：
Dahua has abandoned the web P2P control, replaced the original Cloud Key in the platform server and client tools, and optimized the storage mode of Cloud Key.
Fix Software Download:
Please download the corresponding fix software or its newer version as listed in the above table from Dahua website, or contact Dahua local technical support to upgrade.
● Cloud Upgrade: Dahua products have the capability of cloud upgrade. Relevant repair versions can be obtained through cloud upgrade.
● Dahua Official Website: Mainland：https://www.dahuasecurity.com/support/downloadCenter
● Dahua Technical Support Personnel
For any questions or concerns related to our products and solutions, please contact Dahua DHCC at firstname.lastname@example.org.
We acknowledge the support of Bashis who discovered this vulnerability and reported to DHCC.