Integer Overflow to Buffer Overflow Affecting freerdp package, versions <2:2.2.0-1.el8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.1% (44th percentile)

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  • Snyk IDSNYK-ORACLE8-FREERDP-2585228
  • published10 Apr 2022
  • disclosed27 Jul 2020

Introduced: 27 Jul 2020

CVE-2020-15103  (opens in a new tab)
CWE-680  (opens in a new tab)

How to fix?

Upgrade Oracle:8 freerdp to version 2:2.2.0-1.el8 or higher.
This issue was patched in ELSA-2021-1849.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp package and not the freerdp package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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

CVSS Scores

version 3.1