Neutrinolabs xrdp up to 0.9.20 devredir_proc_client_devlist_announce_req buffer overflow

Summaryinfo

A vulnerability marked as critical has been reported in Neutrinolabs xrdp up to 0.9.20. This issue affects the function devredir_proc_client_devlist_announce_req. The manipulation leads to buffer overflow. This vulnerability is traded as CVE-2022-23480. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Neutrinolabs xrdp up to 0.9.20. This issue affects the function devredir_proc_client_devlist_announce_req. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a buffer over flow in devredir_proc_client_devlist_announce_req() function. There are no known workarounds for this issue. Users are advised to upgrade.

The weakness was shared 12/10/2022 as GHSA-3jmx-f6hv-95wg. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-23480 since 01/19/2022. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 211003 (Fedora 37 : xrdp (2022-6fe4046ae9)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.9.21 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (211003). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Neutrinolabs

Name

• xrdp

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3
• 0.9.4
• 0.9.5
• 0.9.6
• 0.9.7
• 0.9.8
• 0.9.9
• 0.9.10
• 0.9.11
• 0.9.12
• 0.9.13
• 0.9.14
• 0.9.15
• 0.9.16
• 0.9.17
• 0.9.18
• 0.9.19
• 0.9.20

Website

• Product: https://github.com/neutrinolabs/xrdp/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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