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openSUSE Security Update : openssh (openSUSE-2019-914)

medium Nessus Plugin ID 123374

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Synopsis

The remote openSUSE host is missing a security update.

Description

This update for openssh fixes the following issues :

 - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163)

 - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
 (bsc#1105010)

The following non-security issues were fixed :

 - Stop leaking File descriptors (bsc#964336)

 - sftp-client.c returns wrong error code upon failure (bsc#1091396)

 - added pam_keyinit to pam configuration file (bsc#1081947)

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

Solution

Update the affected openssh packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1081947

https://bugzilla.opensuse.org/show_bug.cgi?id=1091396

https://bugzilla.opensuse.org/show_bug.cgi?id=1105010

https://bugzilla.opensuse.org/show_bug.cgi?id=1106163

https://bugzilla.opensuse.org/show_bug.cgi?id=964336

Plugin Details

Severity: Medium

ID: 123374

File Name: openSUSE-2019-914.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/27/2019

Updated: 6/10/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

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

CVSS Score Source: CVE-2018-15919

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 5.1

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:openssh-askpass-gnome, p-cpe:/a:novell:opensuse:openssh-askpass-gnome-debuginfo, p-cpe:/a:novell:opensuse:openssh-fips, cpe:/o:novell:opensuse:15.0, p-cpe:/a:novell:opensuse:openssh-cavs-debuginfo, p-cpe:/a:novell:opensuse:openssh, p-cpe:/a:novell:opensuse:openssh-helpers-debuginfo, p-cpe:/a:novell:opensuse:openssh-cavs, p-cpe:/a:novell:opensuse:openssh-debuginfo, p-cpe:/a:novell:opensuse:openssh-debugsource, p-cpe:/a:novell:opensuse:openssh-helpers

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/23/2019

Vulnerability Publication Date: 8/17/2018

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2018-15473, CVE-2018-15919