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             AUSCERT External Security Bulletin Redistribution

               SUSE-SU-2019:1847-1 Security update for xrdp
                               16 July 2019


        AusCERT Security Bulletin Summary

Product:           xrdp
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-16927 CVE-2017-6967 CVE-2013-1430

Reference:         ESB-2017.3081

Original Bulletin: 

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SUSE Security Update: Security update for xrdp


Announcement ID:   SUSE-SU-2019:1847-1
Rating:            important
References:        #1014524 #1015567 #1029912 #1060644 #1069591 #1090174
                   #1100453 #1101506
Cross-References:  CVE-2013-1430 CVE-2017-16927 CVE-2017-6967
Affected Products:
                   SUSE Linux Enterprise Server 12-SP4
                   SUSE Linux Enterprise Desktop 12-SP4

An update that solves three vulnerabilities and has 5 fixes is now available.


This update for xrdp fixes the following issues:
These security issues were fixed:

  o 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
  o 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).
  o 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).

These non-security issues were fixed:

  o The KillDisconnected option for TigerVNC Xvnc sessions is now supported
  o Fixed an issue with delayed X KeyRelease events (bsc#1100453)
  o Force xrdp-sesman.service to start after xrdp.service. (bsc#1014524)
  o Avoid use of hard-coded sesman port. (bsc#1060644)
  o Fixed a regression connecting from Windows 10. (bsc#1090174)

Patch Instructions:

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:

  o SUSE Linux Enterprise Server 12-SP4:
    zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-1847=1
  o SUSE Linux Enterprise Desktop 12-SP4:
    zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-1847=1

Package List:

  o SUSE Linux Enterprise Server 12-SP4 (aarch64 ppc64le s390x x86_64):
  o SUSE Linux Enterprise Desktop 12-SP4 (x86_64):


  o https://www.suse.com/security/cve/CVE-2013-1430.html
  o https://www.suse.com/security/cve/CVE-2017-16927.html
  o https://www.suse.com/security/cve/CVE-2017-6967.html
  o https://bugzilla.suse.com/1014524
  o https://bugzilla.suse.com/1015567
  o https://bugzilla.suse.com/1029912
  o https://bugzilla.suse.com/1060644
  o https://bugzilla.suse.com/1069591
  o https://bugzilla.suse.com/1090174
  o https://bugzilla.suse.com/1100453
  o https://bugzilla.suse.com/1101506

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