CVE-2020-15103

Name: CVE-2020-15103
Creator: NVD / NIST
Published: 2020-07-27T18:15:13.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.5/10EPSS 1.47%

Last modified Jun 17, 2026

CVE-2020-15103 is a low-severity vulnerability rated 3.5/10 on the CVSS scale. In FreeRDP less than or equal to 2.1.2, an integer overflow exists due to missing input sanitation in rdpegfx channel. All FreeRDP clients are affected. EPSS estimates a 1.47% chance of exploitation in the next 30 days.

Description

In FreeRDP less than or equal to 2.1.2, an integer overflow exists due to missing input sanitation in rdpegfx channel. All FreeRDP clients are affected. The input rectangles from the server are not checked against local surface coordinates and blindly accepted. A malicious server can send data that will crash the client later on (invalid length arguments to a `memcpy`) This has been fixed in 2.2.0. As a workaround, stop using command line arguments /gfx, /gfx-h264 and /network:auto

Metrics

CVSS 3.1

3.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

EPSS Probability

1.47%

70.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freerdp	Freerdp	<= 2.1.2
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Opensuse	Leap	15.1
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04
Debian	Debian Linux	10.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00010.htmlMailing List, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/blob/616af2d5b86dc24c7b3e89870dbcffd841d9a535/ChangeLog#L4Release Notes, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/pull/6382Patch, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4r38-6hq7-j3j9Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
https://usn.ubuntu.com/4481-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00010.htmlMailing List, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/blob/616af2d5b86dc24c7b3e89870dbcffd841d9a535/ChangeLog#L4Release Notes, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/pull/6382Patch, Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4r38-6hq7-j3j9Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
https://usn.ubuntu.com/4481-1/Third Party Advisory

Timeline

Published: Jul 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15103?

How severe is CVE-2020-15103?

CVE-2020-15103 has a CVSS score of 3.5/10 (LOW severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15103?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15103?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST