SUSE SLES12 Security Update : xrdp (SUSE-SU-2019:1860-1)

critical Nessus Plugin ID 126771

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for xrdp fixes the following issues :

Security issues fixed :

CVE-2013-1430: When successfully logging in using RDP into an xrdp session, the file ~/.vnc/sesman_${username}_passwd was created. Its content was the equivalent of the user's cleartext password, DES encrypted with a known key (bsc#1015567).

CVE-2017-16927: The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session manager in xrdp through used an untrusted integer as a write length, which could lead to a local denial of service (bsc#1069591).

CVE-2017-6967: Fixed call of the PAM function auth_start_session().
This lead to 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 (bsc#1029912).

Other issues addressed: The KillDisconnected option for TigerVNC Xvnc sessions is now supported (bsc#1101506)

Fixed an issue with delayed X KeyRelease events (bsc#1100453)

Force xrdp-sesman.service to start after xrdp.service. (bsc#1014524)

Avoid use of hard-coded sesman port. (bsc#1060644)

Backport upstream commit 5575197, sesman should stop setting LANG and let initialization scripts take care of it (bsc#1023988).

Backport upstream patches for 32bpp support (bsc#1022098).

Fixed a regression connecting from Windows 10. (bsc#1090174)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 7:zypper in -t patch SUSE-OpenStack-Cloud-7-2019-1860=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-1860=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-1860=1

SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2019-1860=1

Plugin Details

Severity: Critical

ID: 126771

File Name: suse_SU-2019-1860-1.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/17/2019

Updated: 5/19/2022

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2017-6967

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2013-1430

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xrdp, p-cpe:/a:novell:suse_linux:xrdp-debuginfo, p-cpe:/a:novell:suse_linux:xrdp-debugsource, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/16/2019

Vulnerability Publication Date: 12/16/2016

Reference Information

CVE: CVE-2013-1430, CVE-2017-16927, CVE-2017-6967

Detections

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