Buffer overflow in Freerdp
CVE-2021-41159
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.
Vulnerability class: Buffer Overflow
EPSS: 0.013 (68.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N.
Affected products
- Freerdp — versions < 2.4.1
- Fedoraproject Fedora — versions 35
Weakness classification (CWE)
References
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (vendor-advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-41159?
- CVE-2021-41159 is a medium-severity vulnerability in Freerdp, classified under Out-of-bounds Write. CVSS score: 5.8/10. Published 2021-10-21.
- How severe is CVE-2021-41159?
- Medium severity. CVSS v3 base score is 5.8 out of 10.