Huawei Document Security Management (DSM) provides document permission control. A vulnerability in the permission control module of DSM could lead to incorrect control over specific permissions on encrypted documents. (Vulnerability ID：HWPSIRT-2015-12030)
This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2016-2406.
Huawei has released software updates to fix these vulnerabilities. This advisory is available at the following link:
Resolved Product and Version
V100R002C05SPC661 and earlier versions
Attackers can obtain the content of encrypted documents.
The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/).
Base Score: 4.0 (AV:N/AC:L/Au:S/C:N/I:N/A:P)
Temporal Score: 3.3 (E:F/RL:O/RC:C)
The attacker can access the network in which DSM is deployed;
2. Attacking procedure:
The permission control module of the DSM cannot correctly control the permissions on the PrintScreen button. As a result, attackers can obtain the content in encrypted documents through screenshot.
Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities
This vulnerability was discovered by Huawei internal tester.
2016-02-22 V1.1 UPDATED Assigned a CVE ID to the vulnerability
2016-02-18 V1.0 INITIAL
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