Advisory Details

January 5th, 2018

Microsoft Chakra Memory Allocator Integer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2018-0772
CVSS SCORE	5.1, AV:N/AC:H/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Chakra
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Chakra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within Chakra's memory allocation routines. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer and writing to memory. An attacker can leverage this vulnerability to execute code under the context of the current process.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-0772
DISCLOSURE TIMELINE	2017-12-12 - Vulnerability reported to vendor 2018-01-05 - Coordinated public release of advisory
CREDIT	Anonymous

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