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FreeBSD: VID-A955CDB7-D089-11EA-8C6F-080027EEDC6A (CVE-2020-15103): FreeRDP -- Integer overflow in RDPEGFX channel

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FreeBSD: VID-A955CDB7-D089-11EA-8C6F-080027EEDC6A (CVE-2020-15103): FreeRDP -- Integer overflow in RDPEGFX channel

Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
06/25/2020
Created
07/31/2020
Added
07/29/2020
Modified
10/20/2020

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

Solution(s)

  • freebsd-upgrade-package-freerdp

References

  • CVE-2020-15103

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