low
3.5
CWE
680 190
Advisory Published
Updated

CVE-2020-15103: Integer Overflow

First published: Mon Jul 27 2020(Updated: )

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

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
FreeRDP FreeRDP<=2.1.2
Fedoraproject Fedora=31
Fedoraproject Fedora=32
openSUSE Leap=15.1
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Debian Debian Linux=10.0
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.18.04.1
2.2.0+dfsg1-0ubuntu0.18.04.1
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.20.04.1
2.2.0+dfsg1-0ubuntu0.20.04.1
debian/freerdp2<=2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
2.3.0+dfsg1-2+deb10u4
2.3.0+dfsg1-2+deb11u1
2.10.0+dfsg1-1
2.11.2+dfsg1-1
2.11.5+dfsg1-1

Remedy

https://github.com/FreeRDP/FreeRDP/pull/6382

Remedy

https://github.com/FreeRDP/FreeRDP/commit/be8c8640ead04b1e4fc9176c504bf688351c8924

Remedy

https://github.com/FreeRDP/FreeRDP/commit/da684f5335c2b3b726a39f3c091ce804e55f4f8e

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-15103?

    CVE-2020-15103 is a vulnerability in FreeRDP less than or equal to version 2.1.2 that allows an integer overflow due to missing input sanitation in the rdpegfx channel.

  • Which software is affected by CVE-2020-15103?

    All FreeRDP clients are affected by CVE-2020-15103.

  • What is the severity of CVE-2020-15103?

    CVE-2020-15103 has a severity rating of low with a CVSS score of 3.5.

  • How can I fix CVE-2020-15103?

    To fix CVE-2020-15103, update FreeRDP to version 2.2.0+dfsg1-0ubuntu0.18.04.1 or later.

  • Where can I find more information about CVE-2020-15103?

    More information about CVE-2020-15103 can be found at the following references: [CVE-2020-15103](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15103), [GitHub Pull Request](https://github.com/FreeRDP/FreeRDP/pull/6381), [Ubuntu Security Notice USN-4481-1](https://ubuntu.com/security/notices/USN-4481-1).

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