Advisory Details

August 2nd, 2018

(Pwn2Own) Huawei Reader onChapPack Directory Traversal File Deletion Vulnerability

CVE ID	CVE-2017-15309
CVSS SCORE	3.6, AV:L/AC:L/Au:N/C:N/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 ['29908']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows local attackers to delete 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 the onChapPack function. 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 vulnerability to delete any files accessible to the user.
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	2017-11-02 - 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

BACK TO ADVISORIES