Neutrinolabs xrdp up to 0.9.20 xrdp_mm_trans_process_drdynvc_channel_open out-of-bounds write

Summaryinfo

A vulnerability identified as critical has been detected in Neutrinolabs xrdp up to 0.9.20. This affects the function xrdp_mm_trans_process_drdynvc_channel_open. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2022-23478. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Neutrinolabs xrdp up to 0.9.20. This affects the function xrdp_mm_trans_process_drdynvc_channel_open. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. 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 Out of Bound Write in xrdp_mm_trans_process_drdynvc_channel_open() function. There are no known workarounds for this issue. Users are advised to upgrade.

The weakness was disclosed 12/10/2022 as GHSA-2f49-wwpm-78pj. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-23478 since 01/19/2022. Technical details are known, but no exploit is available.

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). Several companies clearly confirm that VulDB is the primary source for best 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/

CPE 2.3info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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