#VU8245 Memory corruption in ChakraCore - CVE-2017-8658

Vulnerability identifier: #VU8245

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-8658

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ChakraCore
Universal components / Libraries / Software for developers

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the Chakra JavaScript engine due to improper handling of objects in memory. A remote attacker can trick the victim into opening a specially crafted content, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ChakraCore: All versions

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8658

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.