Remote code execution in Microsoft Internet Explorer



Published: 2020-04-14 | Updated: 2021-05-19
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-0968
CWE-ID CWE-119
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
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Microsoft Internet Explorer
Client/Desktop applications / Web browsers

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 15.04.2020

Updated bulletin and vulnerability description. This vulnerability is not a zero-day, as previously reported by Microsoft.

Updated: 19.05.2021

Added additional links with information about in-the-wild exploitation of the vulnerability.

1) Buffer overflow

EUVDB-ID: #VU26808

Risk: High

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2020-0968

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the scripting engine. A remote attacker can create a specially crafted webpage, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being actively exploited in the wild as of October 1, 2020.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0968
http://ti.dbappsecurity.com.cn/blog/index.php/2020/09/18/operation-domino/
http://twitter.com/peterkruse/status/1311567387221778437?s=20
http://twitter.com/ClearskySec/status/1311291935685070848


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



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