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Published: 16 December 2016

An issue was discovered in xrdp before 0.9.1. When successfully logging in using RDP into an xrdp session, the file ~/.vnc/sesman_${username}_passwd is created. Its content is the equivalent of the user's cleartext password, DES encrypted with a known key.

From the Ubuntu Security Team

It was discovered that xrdp used a known key to store session passwords in text files. An attacker could potentially decrypt the file to obtain a user password.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
cosmic Not vulnerable
precise Ignored
(end of life)
Released (0.6.0-1ubuntu0.1)
Released (0.9.1~2016121126+git5171fa7-1)
Released (0.6.1-2ubuntu0.1)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H