PT-2016-2972 · Microsoft · Chakra Javascript Engine+3

Scott Bell · Published 2016-11-08 · Updated 2025-02-10 · CVE-2016-7202

Positive Technologies (AI Summary)

CVSS v2.0

7.6

High

Base vector

AV:N/AC:H/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Edge (affected versions not specified) Microsoft Internet Explorer (affected versions not specified) Microsoft Windows (affected versions not specified)

Description The issue is caused by a buffer overflow in the Chakra JavaScript engine of Microsoft Edge, allowing a remote attacker to execute arbitrary code or cause a denial of service by accessing a specially crafted website. The vulnerability can also corrupt memory when handling objects, enabling an attacker to execute arbitrary code in the context of the current user. If the user has administrative rights, the attacker could gain control of the system, install programs, view or modify data, or create new accounts with full user rights.

Recommendations For Microsoft Edge, consider disabling the Chakra JavaScript engine as a temporary workaround until a patch is available. For Microsoft Internet Explorer, restrict access to the Array.splice method to minimize the risk of exploitation. For Microsoft Windows, avoid using the reverse method in JavaScript until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

RCE

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2016-02403

CVE-2016-7202

GHSA-MMFQ-R3RG-8R7W

ZDI-16-593

ZDI-16-689

Affected Products

Chakra Javascript Engine

Edge

Internet Explorer

Windows

References · 29

• 🔥 https://github.com/tunz/js-vuln-db/blob/master/chakra/CVE-2016-7202.md · Exploit
• 🔥 https://exploit-db.com/exploits/40793 · Exploit
• 🔥 https://exploit-db.com/exploits/40786 · Exploit
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-129 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-7202 · Security Note
• https://osv.dev/vulnerability/GHSA-mmfq-r3rg-8r7w · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-16-689 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7202 · Security Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-144 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-16-593 · Security Note
• https://bdu.fstec.ru/vul/2016-02403 · Security Note
• https://github.com/chakra-core/ChakraCore · Note
• https://github.com/chakra-core/ChakraCore/commit/c2787ef8fdb7401922e9ec6540e4e5895d11c631 · Note
• https://github.com/chakra-core/ChakraCore/pull/2196 · Note
• https://web.archive.org/web/20210123185141/http://securityfocus.com/bid/94042 · Note