xrdp: CVE-2023-40184

Debian Bug report logs - #1051061
xrdp: CVE-2023-40184

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: xrdp: CVE-2023-40184

Date: Fri, 01 Sep 2023 22:52:07 +0200

Source: xrdp
Version: 0.9.21.1-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for xrdp.

CVE-2023-40184[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-40184
    https://www.cve.org/CVERecord?id=CVE-2023-40184
[1] https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-f489-557v-47jq
[2] https://github.com/neutrinolabs/xrdp/commit/25a1fab5b6c5ef2a8bb109232b765cb8b332ce5e

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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