Advisory Details

February 7th, 2018

(Pwn2Own) Apple Safari UIProcess Out-Of-Bounds Access Privilege Escalation Vulnerability

CVE ID	CVE-2017-7172
CVSS SCORE	6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Apple
AFFECTED PRODUCTS	Safari
VULNERABILITY DETAILS	This vulnerability allows remote attackers to escalate privileges on vulnerable installations of Apple Safari. 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 ResourceRequest objects. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code under the context of the user.
ADDITIONAL DETAILS	Apple has issued an update to correct this vulnerability. More details can be found at: https://support.apple.com/en-us/HT208334
DISCLOSURE TIMELINE	2017-11-02 - Vulnerability reported to vendor 2018-02-07 - Coordinated public release of advisory 2018-02-07 - Advisory Updated
CREDIT	Richard Zhu (fluorescence)

BACK TO ADVISORIES