Neutrinolabs xrdp up to 0.9.20 xrdp_mm_process_rail_update_window_text integer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in Neutrinolabs xrdp up to 0.9.20. This affects the function xrdp_mm_process_rail_update_window_text. Performing a manipulation results in integer overflow. This vulnerability was named CVE-2022-23484. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Neutrinolabs xrdp up to 0.9.20. It has been classified as critical. This affects the function xrdp_mm_process_rail_update_window_text. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on 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 Integer Overflow in xrdp_mm_process_rail_update_window_text() function. There are no known workarounds for this issue. Users are advised to upgrade.

The weakness was presented 12/10/2022 as GHSA-rqfx-5fv8-q9c6. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2022-23484 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). Be aware that VulDB is the high quality source 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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Be aware that VulDB is the high quality source for vulnerability data.

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