Multiple vulnerabilities in Microsoft Remote Procedure Call Runtime

Published: 2022-04-12 | Updated: 2022-04-15

Risk	High
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2022-26809 CVE-2022-24492 CVE-2022-24528
CWE-ID	CWE-94
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU62106

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-26809

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

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

The vulnerability exists due to improper input validation in Remote Procedure Call Runtime. A remote attacker can send a specially crafted RPC call to an RPC host and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 11 21H2

Windows Server: 2008 - 2022

CPE2.3

cpe:2.3:o:microsoft:windows:10:1809:*:*:*:*:*:*
Full software list in CPE2.3 format available after registration.

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26809

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. However, proof of concept for this vulnerability is available.

2) Code Injection

EUVDB-ID: #VU62107