Memory Corruption in Microsoft Chakra Scripting Engine



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-17131
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 ChakraCore
Universal components / Libraries / Software for developers

Windows
Operating systems & Components / Operating system

Microsoft Edge
Client/Desktop applications / Web browsers

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU48858

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-17131

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Chakra Scripting Engine. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ChakraCore: All versions

Windows: 10 20H2 10.0.19042.572

Microsoft Edge: All versions

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17131


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.



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