high
7.5
CWE
191
Advisory Published
CVE Published
Updated

CVE-2023-39350: Incorrect offset calculation leading to denial of service 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. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. 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

Remedy

https://github.com/FreeRDP/FreeRDP/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-39350?

    CVE-2023-39350 is a vulnerability in FreeRDP, an open-source implementation of the Remote Desktop Protocol (RDP), that can result in denial-of-service (DOS) attacks.

  • Who is affected by CVE-2023-39350?

    Only the clients of FreeRDP version up to 2.11.0 and version 3.0.0-beta1 and beta2 are affected by CVE-2023-39350.

  • What is the severity level of CVE-2023-39350?

    The severity level of CVE-2023-39350 is high with a CVSS score of 7.5 out of 10.

  • How can I fix CVE-2023-39350?

    To fix CVE-2023-39350, it is recommended to update to FreeRDP version 2.11.2 or later.

  • Where can I find more information about CVE-2023-39350?

    You can find more information about CVE-2023-39350 on the GitHub security advisory page and the CVE details page.

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