critical
9.8
CWE
787 190
Advisory Published
CVE Published
Updated

CVE-2023-40186: IntegerOverflow leading to Out-Of-Bound Write Vulnerability in FreeRDP

First published: Thu Aug 31 2023(Updated: )

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an IntegerOverflow leading to Out-Of-Bound Write Vulnerability in the `gdi_CreateSurface` function. This issue affects FreeRDP based clients only. FreeRDP proxies are not affected as image decoding is not done by a proxy. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

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

Affected SoftwareAffected VersionHow to fix
FreeRDP FreeRDP<2.11.0
FreeRDP FreeRDP=3.0.0-beta1
FreeRDP FreeRDP=3.0.0-beta2
Debian Debian Linux=10.0
Fedoraproject Fedora=37
Fedoraproject Fedora=38
Fedoraproject Fedora=39
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.18.04.4+
2.2.0+dfsg1-0ubuntu0.18.04.4+
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.20.04.5
2.2.0+dfsg1-0ubuntu0.20.04.5
ubuntu/freerdp2<2.6.1+dfsg1-3ubuntu2.4
2.6.1+dfsg1-3ubuntu2.4
ubuntu/freerdp2<2.10.0+dfsg1-1ubuntu0.2
2.10.0+dfsg1-1ubuntu0.2
ubuntu/freerdp2<2.10.0+dfsg1-1.1ubuntu1
2.10.0+dfsg1-1.1ubuntu1
ubuntu/freerdp2<2.11.0
2.11.0
redhat/freerdp<2.11.0
2.11.0
redhat/freerdp<3.0.0
3.0.0
debian/freerdp2<=2.3.0+dfsg1-2+deb11u1<=2.10.0+dfsg1-1
2.11.5+dfsg1-1
2.11.7+dfsg1-2

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-40186?

    CVE-2023-40186 is an IntegerOverflow leading to Out-Of-Bound Write Vulnerability in the `gdi_CreateSurface` function of FreeRDP.

  • Which software versions are affected by CVE-2023-40186?

    Versions up to and excluding 2.11.0 of FreeRDP and version 3.0.0-beta1 and 3.0.0-beta2 of FreeRDP are affected by CVE-2023-40186.

  • What is the severity rating of CVE-2023-40186?

    CVE-2023-40186 has a severity rating of 9.8 (Critical).

  • How can I fix CVE-2023-40186?

    To fix CVE-2023-40186, update to FreeRDP version 2.11.2+dfsg1-1 or a later version as recommended by the vendor.

  • Is there any additional information available about CVE-2023-40186?

    Additional information about CVE-2023-40186 can be found at the following references: [link1], [link2], [link3].

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