critical
9.8
CWE
787
Advisory Published
CVE Published
Updated

CVE-2023-39352: Invalid offset validation leading to Out Of Bound Write 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 invalid offset validation leading to Out Of Bound Write. This can be triggered when the values `rect->left` and `rect->top` are exactly equal to `surface->width` and `surface->height`. eg. `rect->left` == `surface->width` && `rect->top` == `surface->height`. In practice this should cause a 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
debian/freerdp2<=2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2<=2.3.0+dfsg1-2+deb11u1<=2.10.0+dfsg1-1
2.3.0+dfsg1-2+deb10u4
2.11.2+dfsg1-1
2.11.5+dfsg1-1
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.18.04.4+
2.2.0+dfsg1-0ubuntu0.18.04.4+
ubuntu/freerdp2<2.2.0+dfsg1-0ubuntu0.20.04.6
2.2.0+dfsg1-0ubuntu0.20.04.6
ubuntu/freerdp2<2.6.1+dfsg1-3ubuntu2.5
2.6.1+dfsg1-3ubuntu2.5
ubuntu/freerdp2<2.10.0+dfsg1-1ubuntu0.3
2.10.0+dfsg1-1ubuntu0.3
ubuntu/freerdp2<2.10.0+dfsg1-1.1ubuntu1.1
2.10.0+dfsg1-1.1ubuntu1.1
ubuntu/freerdp2<2.11.0<3.0.0-
2.11.0
3.0.0-
redhat/freerdp<2.11.0
2.11.0
redhat/freerdp<3.0.0
3.0.0

Remedy

https://github.com/FreeRDP/FreeRDP/commit/7daaba3c1411f71ac7260d01216ab8f8d3687c65

Remedy

https://github.com/FreeRDP/FreeRDP/commit/856ecaa463e963ecfebc9734423d69139e7b3916

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-39352?

    CVE-2023-39352 is a vulnerability in the FreeRDP software that allows for an out-of-bounds write due to an invalid offset validation.

  • How severe is CVE-2023-39352?

    CVE-2023-39352 has a severity level of 9.8 (Critical).

  • Which versions of FreeRDP are affected by CVE-2023-39352?

    Versions up to and inclusive of 2.11.0, 3.0.0-beta1, and 3.0.0-beta2 of FreeRDP are affected by CVE-2023-39352.

  • How can CVE-2023-39352 be exploited?

    CVE-2023-39352 can be exploited by triggering an out-of-bounds write when specific values are equal.

  • Is there a fix available for CVE-2023-39352?

    Yes, a fix is available for CVE-2023-39352. Users should update to a version of FreeRDP that has the patch applied.

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