high
7.5
CWE
476
Advisory Published
CVE Published
Updated

CVE-2023-39351: FreeRDP Null Pointer Dereference leading denial of service

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 of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the `rfx_process_message_tileset` function, the program allocates tiles using `rfx_allocate_tiles` for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program crash. 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 vulnerability.

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-2023-39351?

    CVE-2023-39351 is a vulnerability in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP), that can lead to a crash in the RemoteFX (rfx) handling due to a Null Pointer Dereference.

  • What is the severity of CVE-2023-39351?

    The severity of CVE-2023-39351 is high with a CVSS score of 7.5.

  • How does CVE-2023-39351 affect FreeRDP?

    CVE-2023-39351 affects FreeRDP versions up to and excluding 2.11.0, as well as versions 3.0.0-beta1 and 3.0.0-beta2.

  • How can I fix CVE-2023-39351 in FreeRDP?

    To fix CVE-2023-39351 in FreeRDP, update to version 2.11.2+dfsg1-1 or later.

  • Where can I find more information about CVE-2023-39351?

    You can find more information about CVE-2023-39351 in the advisory on the FreeRDP GitHub repository and in the security advisories from the Fedora Project.

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