Remote code execution in Microsoft .NET Framework

Published: 2017-09-12
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2017-8759
CWE ID CWE-20
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Microsoft .NET Framework Subscribe
Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Improper input validation

Severity: Critical

CVSSv3: 9.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C] [PCI]

CVE-ID: CVE-2017-8759

CWE-ID: CWE-20 - Improper Input Validation

Description

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

The vulnerability exists due to uncpecified error when processing untrusted input. A remote unauthenticated attacker can execute arbitrary code on the target system.

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

Note: this vulnerability is being actively exploited in the wild.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.6.2/4.7/4.7.1, 4.7

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8759

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?

Yes. This vulnerability is being exploited in the wild.