critical
9.8
CWE
787
Advisory Published
CVE Published
Updated

CVE-2023-40567: Out-Of-Bounds 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 Out-Of-Bounds Write in the `clear_decompress_bands_data` function in which there is no offset validation. Abuse of this vulnerability may lead to an out of bounds write. 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+dfsg1-0ubuntu0.20.04.5
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

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-40567?

    CVE-2023-40567 is a vulnerability in the FreeRDP software that allows for an Out-Of-Bounds Write in the clear_decompress_bands_data function.

  • What is the severity of CVE-2023-40567?

    The severity of CVE-2023-40567 is critical with a CVSS score of 9.8.

  • How does CVE-2023-40567 affect FreeRDP?

    CVE-2023-40567 affects versions up to 2.11.0 of FreeRDP and versions 3.0.0-beta1 and 3.0.0-beta2 of FreeRDP.

  • How can CVE-2023-40567 be exploited?

    CVE-2023-40567 can be exploited by abusing the vulnerability to cause an out of bounds write, potentially leading to a denial of service or remote code execution.

  • How can I fix CVE-2023-40567?

    To fix CVE-2023-40567, it is recommended to update to version 2.11.2+dfsg1-1 or apply the appropriate remedy for your specific distribution.

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