Riskcovery

CVE-2023-40184

Improper handling of session establishment errors in xrdp

State
Published
Severity
2.6 Low
Published
Aug 30, 2023
Updated
Nov 3, 2025
Reserved
Aug 9, 2023

Read the record on cve.org

Description

xrdp is an open source remote desktop protocol (RDP) server. In versions prior to 0.9.23 improper handling of session establishment errors allows bypassing OS-level session restrictions. The `auth_start_session` function can return non-zero (1) value on, e.g., PAM error which may result in in session restrictions such as max concurrent sessions per user by PAM (ex ./etc/security/limits.conf) to be bypassed. Users (administrators) don't use restrictions by PAM are not affected. This issue has been addressed in release version 0.9.23. Users are advised to upgrade. There are no known workarounds for this issue.

Scores

CVSSScoreVectorSource
3.12.6 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:LGitHub_M

Weaknesses

  • CWE-755 Improper Handling of Exceptional Conditions

Affected Products

ProductVersions
xrdpneutrinolabs
  • < 0.9.23Affected

References

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