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

Priority

Medium

CVSS 3 base score: 3.5

Status

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

Ubuntu 21.10 (Impish Indri) Does not exist

Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

freerdp2
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri) Not vulnerable
(2.2.0+dfsg1-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(2.2.0+dfsg1-1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (2.2.0+dfsg1-0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2.2.0+dfsg1-0ubuntu0.18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

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

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.

References

Bugs