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
| Author | Note |
|---|---|
| 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
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
|
|
| lunar |
Does not exist
|
|
| mantic |
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)
|
|
| lunar |
Not vulnerable
(2.2.0+dfsg1-1)
|
|
| mantic |
Not vulnerable
(2.2.0+dfsg1-1)
|
|
| 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 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 3.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L |