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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.015 (73.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.015 · change: +0.001
Affected products
- Freerdp — versions < 2.4.1
- Fedoraproject Fedora — versions 35
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vh34-m9h7-95xq (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202210-24 (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.