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CVE-2020-15103

Published: 27 July 2020

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

Notes

AuthorNote
mdeslaur
The freerdp package in Ubuntu 16.04 LTS and Ubuntu 18.04 LTS
does not build a server library. This is simply a client
denial of service that has a negligible security impact.
Priority

Medium

CVSS 3 base score: 3.5

Status

Package Release Status
freerdp
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

freerdp2
Launchpad, Ubuntu, Debian
bionic
Released (2.2.0+dfsg1-0ubuntu0.18.04.1)
focal
Released (2.2.0+dfsg1-0ubuntu0.20.04.1)
groovy Not vulnerable
(2.2.0+dfsg1-1)
hirsute Not vulnerable
(2.2.0+dfsg1-1)
impish Not vulnerable
(2.2.0+dfsg1-1)
jammy Not vulnerable
(2.2.0+dfsg1-1)
kinetic Not vulnerable
(2.2.0+dfsg1-1)
precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

Patches:
upstream: https://github.com/FreeRDP/FreeRDP/commit/be8c8640ead04b1e4fc9176c504bf688351c8924
upstream: https://github.com/FreeRDP/FreeRDP/commit/da684f5335c2b3b726a39f3c091ce804e55f4f8e