Security update for xrdp

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.

Description:

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

These non-security issues were fixed:
  • 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)
  • 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:

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

Package List:

  • SUSE Linux Enterprise Server 12-SP4 (aarch64 ppc64le s390x x86_64):
    • xrdp-0.9.0~git.1456906198.f422461-21.9.1
    • xrdp-debuginfo-0.9.0~git.1456906198.f422461-21.9.1
    • xrdp-debugsource-0.9.0~git.1456906198.f422461-21.9.1
  • SUSE Linux Enterprise Desktop 12-SP4 (x86_64):
    • xrdp-0.9.0~git.1456906198.f422461-21.9.1
    • xrdp-debuginfo-0.9.0~git.1456906198.f422461-21.9.1
    • xrdp-debugsource-0.9.0~git.1456906198.f422461-21.9.1

References: