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CVE-2019-0708: Microsoft Remote Desktop Services Remote Code Execution Vulnerability

CVE-2019-0708 is rated critical with a CVSS v3.1 base score of 9.8 and affects Microsoft Remote Desktop Services, along with 67 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available. CISA added it to its Known Exploited Vulnerabilities catalog on 2021-11-03, which means exploitation in the wild has been observed.

Vulnerability description

A remote code execution vulnerability exists in Remote Desktop Services formerly known as Terminal Services when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests, aka 'Remote Desktop Services Remote Code Execution Vulnerability'.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: None. No action from any user is needed.
Scope: Unchanged. Impact stays within the vulnerable component.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-416: Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

Affected products

Microsoft Windows 7: all versions listed by NVD
Microsoft Windows Server 2008: all versions listed by NVD; r2 sp1
Siemens Axiom Multix M Firmware: all versions listed by NVD
Siemens Axiom Vertix Md Trauma Firmware: all versions listed by NVD
Siemens Axiom Vertix Solitaire M Firmware: all versions listed by NVD
Siemens Mobilett Xp Digital Firmware: all versions listed by NVD
Siemens Multix Pro Acss P Firmware: all versions listed by NVD
Siemens Multix Pro P Firmware: all versions listed by NVD
Siemens Multix Pro Firmware: all versions listed by NVD
Siemens Multix Pro Acss Firmware: all versions listed by NVD
Siemens Multix Pro Navy Firmware: all versions listed by NVD
Siemens Multix Swing Firmware: all versions listed by NVD
Siemens Multix Top Firmware: all versions listed by NVD
Siemens Multix Top Acss Firmware: all versions listed by NVD
Siemens Multix Top P Firmware: all versions listed by NVD