PT-2021-21726 · Freerdp · Freerdp

Published 2021-07-27 · Updated 2021-08-09 · CVE-2021-37594

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 2.4.0

Description The issue is related to missing input checks for a FILECONTENTS SIZE File Contents Request PDU in the wf cliprdr server file contents request function in client/Windows/wf cliprdr.c. This affects FreeRDP on Windows.

Recommendations For versions prior to 2.4.0, update to version 2.4.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the wf cliprdr server file contents request function until a patch is available.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-37594

Affected Products

Freerdp

References · 5

• https://github.com/FreeRDP/FreeRDP/commit/0d79670a28c0ab049af08613621aa0c267f977e9 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-37594 · Security Note
• https://osv.dev/vulnerability/CVE-2021-37594 · Vendor Advisory
• https://github.com/FreeRDP/FreeRDP/compare/2.3.2...2.4.0 · Note
• https://t.me/cibsecurity/26623 · Telegram Post