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             AUSCERT External Security Bulletin Redistribution

           SUSE-SU-2019:13997-1 Security update for libssh2_org
                               1 April 2019


        AusCERT Security Bulletin Summary

Product:           libssh2_org
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Access Privileged Data          -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3863 CVE-2019-3862 CVE-2019-3861
                   CVE-2019-3860 CVE-2019-3859 CVE-2019-3858
                   CVE-2019-3857 CVE-2019-3856 CVE-2019-3855

Reference:         ESB-2019.1047

Original Bulletin: 

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SUSE Security Update: Security update for libssh2_org


Announcement ID:   SUSE-SU-2019:13997-1
Rating:            moderate
References:        #1091236 #1128471 #1128472 #1128474 #1128476 #1128480
                   #1128481 #1128490 #1128492 #1128493
Cross-References:  CVE-2019-3855 CVE-2019-3856 CVE-2019-3857 CVE-2019-3858
                   CVE-2019-3859 CVE-2019-3860 CVE-2019-3861 CVE-2019-3862
Affected Products:
                   SUSE Linux Enterprise Point of Sale 11-SP3
                   SUSE Linux Enterprise Debuginfo 11-SP3

An update that solves 9 vulnerabilities and has one errata is now available.


This update for libssh2_org fixes the following issues:
Security issues fixed:

  o CVE-2019-3861: Fixed Out-of-bounds reads with specially crafted SSH packets
  o CVE-2019-3862: Fixed Out-of-bounds memory comparison with specially crafted
    message channel request packet (bsc#1128492).
  o CVE-2019-3860: Fixed Out-of-bounds reads with specially crafted SFTP
    packets (bsc#1128481).
  o CVE-2019-3863: Fixed an Integer overflow in user authenticate keyboard
    interactive which could allow out-of-bounds writes with specially crafted
    keyboard responses (bsc#1128493).
  o CVE-2019-3856: Fixed a potential Integer overflow in keyboard interactive
    handling which could allow out-of-bounds write with specially crafted
    payload (bsc#1128472).
  o CVE-2019-3859: Fixed Out-of-bounds reads with specially crafted payloads
    due to unchecked use of _libssh2_packet_require and
    _libssh2_packet_requirev (bsc#1128480).
  o CVE-2019-3855: Fixed a potential Integer overflow in transport read which
    could allow out-of-bounds write with specially crafted payload (bsc#
  o CVE-2019-3858: Fixed a potential zero-byte allocation which could lead to
    an out-of-bounds read with a specially crafted SFTP packet (bsc#1128476).
  o CVE-2019-3857: Fixed a potential Integer overflow which could lead to
    zero-byte allocation and out-of-bounds with specially crafted message
    channel request SSH packet (bsc#1128474).

Other issue addressed:

  o Fixed an issue where libssh2 stops parsing known_hosts (bsc#1091236).

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 Point of Sale 11-SP3:
    zypper in -t patch sleposp3-libssh2_org-13997=1
  o SUSE Linux Enterprise Debuginfo 11-SP3:
    zypper in -t patch dbgsp3-libssh2_org-13997=1

Package List:

  o SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
  o SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):


  o https://www.suse.com/security/cve/CVE-2019-3855.html
  o https://www.suse.com/security/cve/CVE-2019-3856.html
  o https://www.suse.com/security/cve/CVE-2019-3857.html
  o https://www.suse.com/security/cve/CVE-2019-3858.html
  o https://www.suse.com/security/cve/CVE-2019-3859.html
  o https://www.suse.com/security/cve/CVE-2019-3860.html
  o https://www.suse.com/security/cve/CVE-2019-3861.html
  o https://www.suse.com/security/cve/CVE-2019-3862.html
  o https://www.suse.com/security/cve/CVE-2019-3863.html
  o https://bugzilla.suse.com/1091236
  o https://bugzilla.suse.com/1128471
  o https://bugzilla.suse.com/1128472
  o https://bugzilla.suse.com/1128474
  o https://bugzilla.suse.com/1128476
  o https://bugzilla.suse.com/1128480
  o https://bugzilla.suse.com/1128481
  o https://bugzilla.suse.com/1128490
  o https://bugzilla.suse.com/1128492
  o https://bugzilla.suse.com/1128493

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