Advisory Details

August 2nd, 2018

(Pwn2Own) Huawei Reader FileName Directory Traversal Privilege Escalation Vulnerability

CVE ID	CVE-2017-15309
CVSS SCORE	4.6, AV:L/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Huawei
AFFECTED PRODUCTS	Reader
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['29907']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows local attackers to create arbitrary files on vulnerable installations of Huawei Reader. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of FileName parameters. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
ADDITIONAL DETAILS	Huawei has issued an update to correct this vulnerability. More details can be found at: http://www.huawei.com/en/psirt/security-advisories/2017/huawei-sa-20171120-01-hwreader-en
DISCLOSURE TIMELINE	2017-11-01 - Vulnerability reported to vendor 2018-08-02 - Coordinated public release of advisory 2018-08-02 - Advisory Updated
CREDIT	MWR Labs - Alex Plaskett James Loureiro Robert Miller and Georgi Geshev

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