SUSE SLED12 / SLES12 Security Update : libssh2_org (SUSE-SU-2019:0655-1)

High Nessus Plugin ID 122997

Synopsis

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

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: Libbssh2 will stop using keys unsupported types in the known_hosts file (bsc#1091236).

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-7-2019-655=1

SUSE Linux Enterprise Software Development Kit 12-SP4:zypper in -t patch SUSE-SLE-SDK-12-SP4-2019-655=1

SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t patch SUSE-SLE-SDK-12-SP3-2019-655=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-655=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-655=1

SUSE Linux Enterprise Server 12-SP4:zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-655=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch SUSE-SLE-SERVER-12-SP3-2019-655=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-655=1

SUSE Linux Enterprise Server 12-SP2-BCL:zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2019-655=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-655=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-2019-655=1

SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-655=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2019-655=1

SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2019-655=1

SUSE CaaS Platform ALL :

To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

SUSE CaaS Platform 3.0 :

To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2019-655=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1091236

https://bugzilla.suse.com/show_bug.cgi?id=1128471

https://bugzilla.suse.com/show_bug.cgi?id=1128472

https://bugzilla.suse.com/show_bug.cgi?id=1128474

https://bugzilla.suse.com/show_bug.cgi?id=1128476

https://bugzilla.suse.com/show_bug.cgi?id=1128480

https://bugzilla.suse.com/show_bug.cgi?id=1128481

https://bugzilla.suse.com/show_bug.cgi?id=1128490

https://bugzilla.suse.com/show_bug.cgi?id=1128492

https://bugzilla.suse.com/show_bug.cgi?id=1128493

https://www.suse.com/security/cve/CVE-2019-3855/

https://www.suse.com/security/cve/CVE-2019-3856/

https://www.suse.com/security/cve/CVE-2019-3857/

https://www.suse.com/security/cve/CVE-2019-3858/

https://www.suse.com/security/cve/CVE-2019-3859/

https://www.suse.com/security/cve/CVE-2019-3860/

https://www.suse.com/security/cve/CVE-2019-3861/

https://www.suse.com/security/cve/CVE-2019-3862/

https://www.suse.com/security/cve/CVE-2019-3863/

http://www.nessus.org/u?82b9fea4

Plugin Details

Severity: High

ID: 122997

File Name: suse_SU-2019-0655-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/03/21

Updated: 2020/02/03

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2019-3855

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libssh2, p-cpe:/a:novell:suse_linux:libssh2-1, p-cpe:/a:novell:suse_linux:libssh2-1-debuginfo, p-cpe:/a:novell:suse_linux:libssh2_org-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: 2019/03/20

Vulnerability Publication Date: 2019/03/21

Reference Information

CVE: CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3858, CVE-2019-3859, CVE-2019-3860, CVE-2019-3861, CVE-2019-3862, CVE-2019-3863