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CVE-2017-6967

Published: 17 March 2017

xrdp 0.9.1 calls the PAM function auth_start_session() in an incorrect location, leading to PAM session modules not being properly initialized, with a potential consequence of incorrect configurations or elevation of privileges, aka a pam_limits.so bypass.

From the Ubuntu Security Team

It was discovered that PAM incorrectly initialized session modules. This could potentially bypass enforcement of limits.

Priority

Medium

Cvss 3 Severity Score

7.3

Score breakdown

Status

Package Release Status
xrdp
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(0.9.5-2)
cosmic Not vulnerable
(0.9.5-2)
disco Not vulnerable
(0.9.5-2)
eoan Not vulnerable
(0.9.5-2)
focal Not vulnerable
(0.9.5-2)
groovy Not vulnerable
(0.9.5-2)
hirsute Not vulnerable
(0.9.5-2)
impish Not vulnerable
(0.9.5-2)
jammy Not vulnerable
(0.9.5-2)
precise
Released (0.5.0-2+deb7u1build0.12.04.1)
trusty
Released (0.6.0-1ubuntu0.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (0.9.1-9)
xenial
Released (0.6.1-2ubuntu0.3+esm1)
Available with Ubuntu Pro
yakkety Ignored
(end of life)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 7.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L