#VU18764 Out-of-bounds read in Microsoft Edge and ChakraCore


Published: 2019-06-12

Vulnerability identifier: #VU18764

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-1023

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Edge
Client/Desktop applications / Web browsers
ChakraCore
Universal components / Libraries / Software for developers

Vendor: Microsoft

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the way the scripting engine handles objects in memory in Microsoft Edge. A remote attacker can use a specially crafted web page to trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Edge:

ChakraCore: All versions


External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1023


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.


Latest bulletins with this vulnerability