SUSE SLED15 / SLES15 Security Update : libssh2_org (SUSE-SU-2020:3551-1)

critical Nessus Plugin ID 143867



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


This update for libssh2_org fixes the following issues :

Version update to 1.9.0: [bsc#1178083, jsc#SLE-16922] Enhancements and bugfixes :

- adds ECDSA keys and host key support when using OpenSSL

- adds ED25519 key and host key support when using OpenSSL 1.1.1

- adds OpenSSH style key file reading

- adds AES CTR mode support when using WinCNG

- adds PEM passphrase protected file support for Libgcrypt and WinCNG

- adds SHA256 hostkey fingerprint

- adds libssh2_agent_get_identity_path() and libssh2_agent_set_identity_path()

- adds explicit zeroing of sensitive data in memory

- adds additional bounds checks to network buffer reads

- adds the ability to use the server default permissions when creating sftp directories

- adds support for building with OpenSSL no engine flag

- adds support for building with LibreSSL

- increased sftp packet size to 256k

- fixed oversized packet handling in sftp

- fixed building with OpenSSL 1.1

- fixed a possible crash if sftp stat gets an unexpected response

- fixed incorrect parsing of the KEX preference string value

- fixed conditional RSA and AES-CTR support

- fixed a small memory leak during the key exchange process

- fixed a possible memory leak of the ssh banner string

- fixed various small memory leaks in the backends

- fixed possible out of bounds read when parsing public keys from the server

- fixed possible out of bounds read when parsing invalid PEM files

- no longer null terminates the scp remote exec command

- now handle errors when diffie hellman key pair generation fails

- improved building instructions

- improved unit tests

Version update to 1.8.2: [bsc#1130103] Bug fixes :

- Fixed the misapplied userauth patch that broke 1.8.1

- moved the MAX size declarations from the public header

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.


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 for SAP 15 :

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2020-3551=1

SUSE Linux Enterprise Server 15-LTSS :

zypper in -t patch SUSE-SLE-Product-SLES-15-2020-3551=1

SUSE Linux Enterprise Module for Basesystem 15-SP2 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2020-3551=1

SUSE Linux Enterprise Module for Basesystem 15-SP1 :

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2020-3551=1

SUSE Linux Enterprise High Performance Computing 15-LTSS :

zypper in -t patch SUSE-SLE-Product-HPC-15-2020-3551=1

SUSE Linux Enterprise High Performance Computing 15-ESPOS :

zypper in -t patch SUSE-SLE-Product-HPC-15-2020-3551=1

See Also

Plugin Details

Severity: Critical

ID: 143867

File Name: suse_SU-2020-3551-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 12/9/2020

Updated: 5/11/2022

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Source: CVE-2019-3855


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

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


Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

Temporal Vector: 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:libssh2-1-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libssh2-1-debuginfo, p-cpe:/a:novell:suse_linux:libssh2-devel, p-cpe:/a:novell:suse_linux:libssh2_org-debugsource, cpe:/o:novell:suse_linux:15

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: 11/27/2020

Vulnerability Publication Date: 3/21/2019

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, CVE-2019-17498