SA ID: DHCC-SA-201909-001

First Published: September 14, 2019

Latest Update: January 10, 2020

Summary:

1. The specific fields of CGI interface of some Dahua products are not strictly verified, an attacker can cause a buffer overflow by constructing malicious packets.

2. Some Dahua products have the problem of denial of service during the login process. An attacker can cause a device crashed by constructing a malicious packets.

3. Some of Dahua's Debug functions do not have permission separation. Low-privileged users can use the Debug function after logging in.

4. Some Dahua products have information leakage issues. Attackers can obtain the IP address and device model information of the device by constructing malicious data packets.

5. Online upgrade information in some firmware packages of Dahua products is not encrypted. Attackers can obtain this information by analyzing firmware packages by specific means.

CVE ID：

1. CVE-2019-9677

2. CVE-2019-9678

3. CVE-2019-9679

4. CVE-2019-9680

5. CVE-2019-9681

Vulnerability Score (CVSS V3.0 http://www.first.org/cvss/specification-document):

1. CVE-2019-9677

Base Score：9.8(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Temporal Score：9.4(E:H/RL:O/RC:C)

2. CVE-2019-9678

Base Score：7.5(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Temporal Score：7.2(E:H/RL:O/RC:C)

3. CVE-2019-9679

Base Score：8.8(AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Temporal Score：8.4(E:H/RL:O/RC:C)

4. CVE-2019-9680

Base Score：5.3(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Temporal Score：5.1(E:H/RL:O/RC:C)

5. CVE-2019-9681

Base Score：5.3(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Temporal Score：5.1(E:H/RL:O/RC:C)

Affected Products & Fix Software：

The following product series and models are known to be affected at present：

Affected Model	Affected Version	Fix Software
IPC-HDW1X2X IPC-HFW1X2X IPC-HDW2X2X IPC-HFW2X2X	Versions which Build time before August 18,2019	DH_IPC-HX1X2X-Themis_Eng_P_V2.620.0000004.0.R.191130.zip DH_IPC-HX1X2X-Themis_EngSpn_N_V2.620.0000004.0.R.191130.zip
IPC-HDW4X2X IPC-HFW4X2X IPC-HDBW4X2X	Versions which Build time before August 18,2019	DH_IPC-HX4X2X-Themis_Chn_PN_Stream3_V2.620.0000004.0.R.191130.zip DH_IPC-HX4X2X-Themis_Eng_P_Stream3_V2.620.0000004.0.R.191130.zip DH_IPC-HX4X2X-Themis_EngSpn_N_Stream3_V2.620.0000004.0.R.191130.zip DH_IPC-HX4X2X-Themis_Chn_PN_Stream3_Wifi_V2.620.0000004.0.R.191130.zip DH_IPC-HX4X2X-Themis_Eng_P_Stream3_Wifi_V2.620.0000004.0.R.191130.zip DH_IPC-HX4X2X-Themis_EngSpn_N_Stream3_Wifi_V2.620.0000004.0.R.191130.zip
IPC-HDW5X2X IPC-HFW5X2X	Versions which Build time before August 18,2019	DH_IPC-HX5X2X-Themis_Chn_PN_Stream3_V2.620.0000004.0.R.191130.zip DH_IPC-HX5X2X-Themis_Eng_P_Stream3_V2.620.0000004.0.R.191130.zip DH_IPC-HX5X2X-Themis_EngSpn_N_Stream3_V2.620.0000004.0.R.191130.zip

Dahua will provide update information if additional affected products are identified.

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.

The access to the fix is as follows:

● Cloud Upgrade

Dahua products have the capability of cloud upgrade. Relevant repair versions can be obtained through cloud upgrade.

● Dahua Official Website

Overseas：https://www.dahuasecurity.com/support/downloadCenter

● Dahua Technical Support Personnel

Support Resources:

Dahua technical team will be available to advise and support the upgrade process. For any questions or concerns related to our products and solutions, please contact Dahua Dahua PSIRT at psirt@dahuatech.com.

We acknowledge the support of Daniel Nussko, Thomas Vogt, Philipp Rombach, Dennis Barnekow and Florian Losch from University of Applied Sciences Offenburg who discovered these vulnerabilities and reported to Dahua PSIRT.

Note on Update:

2020-01-10 UPDATE Update fix software

2019-09-14 INITIAL