Security update for libssh2_org

Announcement ID: SUSE-SU-2019:13997-1
Rating: moderate
References:
Cross-References:
CVSS scores:
  • CVE-2019-3855 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3855 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3855 ( NVD ): 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3856 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3856 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3856 ( NVD ): 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3857 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3857 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3857 ( NVD ): 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2019-3858 ( SUSE ): 4.6 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
  • CVE-2019-3858 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • CVE-2019-3859 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3859 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • CVE-2019-3860 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3860 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • CVE-2019-3861 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
  • CVE-2019-3861 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • CVE-2019-3862 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3862 ( NVD ): 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • CVE-2019-3863 ( SUSE ): 3.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
  • CVE-2019-3863 ( NVD ): 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Point of Service 11 SP3

An update that solves nine vulnerabilities and has one security fix can now be installed.

Description:

This update for libssh2_org fixes the following issues:

Security issues fixed:

  • CVE-2019-3861: Fixed Out-of-bounds reads with specially crafted SSH packets (bsc#1128490).
  • CVE-2019-3862: Fixed Out-of-bounds memory comparison with specially crafted message channel request packet (bsc#1128492).
  • CVE-2019-3860: Fixed Out-of-bounds reads with specially crafted SFTP packets (bsc#1128481).
  • 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).
  • 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).
  • 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).
  • CVE-2019-3855: Fixed a potential Integer overflow in transport read which could allow out-of-bounds write with specially crafted payload (bsc#1128471).
  • 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).
  • 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:

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

Patch Instructions:

To install this SUSE 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 Point of Service 11 SP3
    zypper in -t patch sleposp3-libssh2_org-13997=1

Package List:

  • SUSE Linux Enterprise Point of Service 11 SP3 (i586)
    • libssh2-1-1.2.9-4.2.12.5.1

References: