CVE-2018-0925

Vulnerability

The vulnerability is a memory corruption issue in the ChakraCore scripting engine [1]. It occurs due to how the engine handles objects in memory [1]. This CVE ID is unique from CVE-2018-0876, CVE-2018-0889, CVE-2018-0893, and CVE-2018-0935 [1]. References indicate the affected version is Microsoft ChakraCore 0 [3]. The flaw is classified as a failure to handle exceptional conditions [3].

Exploitation

An attacker can exploit this vulnerability remotely without local access [3]. To trigger the vulnerability, the attacker needs to craft a malicious web page that leverages the memory corruption in ChakraCore [1][3]. If a user visits this page with a browser or application that uses the vulnerable ChakraCore engine, the attacker's code can execute in the context of the current user [1]. The exploitation sequence is not detailed in the available references, but it involves the scripting engine incorrectly handling objects in memory [1].

Impact

Successful exploitation allows an attacker to achieve remote code execution [1]. The attacker gains the ability to run arbitrary code in the context of the user who is running the vulnerable application [1]. This can lead to full compromise of the affected system, including data disclosure, modification, or denial of service [1].

Mitigation

Microsoft released security updates for ChakraCore to address this vulnerability [1]. The fix was included in updates released on March 13, 2018 [3]. ChakraCore is an open-source project; Microsoft provided security updates for ChakraCore 1.11 until March 9, 2021 [2]. Users should apply the latest security patches from their software vendor. No workaround is disclosed if patching is not possible [1].