openSUSE Security Update : libssh2_org (openSUSE-2020-2126)

high Nessus Plugin ID 143507
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote openSUSE host is missing a security update.

Description

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 This update was imported from the SUSE:SLE-15:Update update project.

Solution

Update the affected libssh2_org packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1130103

https://bugzilla.opensuse.org/show_bug.cgi?id=1178083

Plugin Details

Severity: High

ID: 143507

File Name: openSUSE-2020-2126.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/7/2020

Updated: 12/9/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-3855

VPR

Risk Factor: Medium

Score: 6

CVSS v2

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

CVSS v3

Risk Factor: High

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libssh2-1, p-cpe:/a:novell:opensuse:libssh2-1-32bit, p-cpe:/a:novell:opensuse:libssh2-1-32bit-debuginfo, p-cpe:/a:novell:opensuse:libssh2-1-debuginfo, p-cpe:/a:novell:opensuse:libssh2-devel, p-cpe:/a:novell:opensuse:libssh2_org-debugsource, cpe:/o:novell:opensuse:15.1

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/30/2020

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2019-17498, 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