Vulnerability identifier: #VU28511

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11089

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeRDP
Universal components / Libraries / Libraries used by multiple products

Vendor: FreeRDP

Description

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

The vulnerability exists due to a boundary condition in the "parallel_process_irp_create", "serial_process_irp_create", "drive_process_irp_write", "printer_process_irp_write", "rdpei_recv_pdu" and "serial_process_irp_write" functions. 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

FreeRDP: 1.0 - 2.0.0 rc4

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External links
http://github.com/FreeRDP/FreeRDP/commit/6b485b146a1b9d6ce72dfd7b5f36456c166e7a16
http://github.com/FreeRDP/FreeRDP/commit/795842f4096501fcefc1a7f535ccc8132feb31d7
http://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hfc7-c5gv-8c2h

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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.