SB2023121474 - SUSE update for xrdp

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Main Vulnerability Database SB2023121474

SB2023121474 - SUSE update for xrdp

Published: December 14, 2023

Security Bulletin ID SB2023121474
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Security features bypass (CVE-ID: CVE-2023-40184)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to improper handling of session restrictions inside the xrdp-sesman. A remote user can bypass session restrictions, such as max concurrent sessions per user enforced by PAM.


2) Out-of-bounds read (CVE-ID: CVE-2023-42822)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in xrdp_painter.c when accessing the font glyphs. A remote user can trigger an out-of-bounds read error and read contents of memory on the system.

Successful exploitation of the vulnerability may lead to system compromise.


Remediation

Install update from vendor's website.

References