Upstream information

CVE-2018-15919 at MITRE

Description

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5
Vector AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.3 5.3
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact Low Low
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3 3

Note from the SUSE Security Team

The upstream openssh project does not consider this a security issue. Only existance of users can be determined, users cannot be enumerated by this issue. SUSE is currently not planning to fix this problem.

SUSE Bugzilla entries: 1105010 [RESOLVED / FIXED], 1106163 [RESOLVED / WONTFIX], 1114890 [RESOLVED / DUPLICATE], 1115654 [RESOLVED / FIXED], 1123133 [RESOLVED / FIXED], 1138392 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Image SLES15-EC2-CHOST-HVM-BYOS
  • openssh >= 7.6p1-9.8.1
SUSE Linux Enterprise Module for Basesystem 15 SP1
  • openssh >= 7.9p1-4.7
  • openssh-helpers >= 7.9p1-4.7
SUSE Linux Enterprise Module for Basesystem 15
  • openssh >= 7.6p1-9.8.1
  • openssh-helpers >= 7.6p1-9.8.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-2018-2619
SUSE-SLE-Module-Basesystem-15-2018-2720
SUSE Linux Enterprise Module for Desktop Applications 15
  • openssh-askpass-gnome >= 7.6p1-9.8.1
Patchnames:
SUSE-SLE-Module-Desktop-Applications-15-2018-2619
SUSE-SLE-Module-Desktop-Applications-15-2018-2720
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
  • openssh >= 7.6p1-9.8.1
  • openssh-cavs >= 7.6p1-9.8.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-2018-2619
SUSE-SLE-Module-Development-Tools-OBS-15-2018-2720
SUSE Linux Enterprise Module for Server Applications 15 SP1
  • openssh-fips >= 7.9p1-4.7
SUSE Linux Enterprise Module for Server Applications 15
  • openssh >= 7.6p1-9.8.1
  • openssh-fips >= 7.6p1-9.8.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-2018-2619
SUSE-SLE-Module-Server-Applications-15-2018-2720
SUSE Linux Enterprise Point of Sale 11 SP3
  • openssh >= 6.2p2-0.41.8.1
  • openssh-askpass >= 6.2p2-0.41.8.1
  • openssh-askpass-gnome >= 6.2p2-0.41.8.1
Patchnames:
sleposp3-openssh-13848
sleposp3-openssh-13873
SUSE Linux Enterprise Server 11 SP3-LTSS
SUSE Linux Enterprise Server for SAP Applications 11 SP3-LTSS
  • openssh >= 6.2p2-0.41.8.1
  • openssh-askpass >= 6.2p2-0.41.8.1
  • openssh-askpass-gnome >= 6.2p2-0.41.8.1
Patchnames:
slessp3-openssh-13848
slessp3-openssh-13873
SUSE Linux Enterprise Server 11 SP4
SUSE Linux Enterprise Server for SAP Applications 11 SP4
  • openssh >= 6.6p1-36.9.1
  • openssh-askpass-gnome >= 6.6p1-36.9.1
  • openssh-fips >= 6.6p1-36.9.1
  • openssh-helpers >= 6.6p1-36.9.1
Patchnames:
slessp4-openssh-13867
slessp4-openssh-13872
SUSE Linux Enterprise Server 11-SECURITY
SUSE Linux Enterprise Server for SAP Applications 11-SECURITY
  • openssh-openssl1 >= 6.6p1-19.9.1
  • openssh-openssl1-helpers >= 6.6p1-19.9.1
Patchnames:
secsp3-openssh-13874
secsp3-openssh-openssl1-13865
SUSE Linux Enterprise Server 12 SP1-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP1-LTSS
  • openssh >= 6.6p1-54.21.1
  • openssh-askpass-gnome >= 6.6p1-54.21.1
  • openssh-fips >= 6.6p1-54.21.1
  • openssh-helpers >= 6.6p1-54.21.1
Patchnames:
SUSE-SLE-SERVER-12-SP1-2018-2698
SUSE-SLE-SERVER-12-SP1-2018-2722
SUSE Linux Enterprise Server 12-LTSS
SUSE Linux Enterprise Server for SAP Applications 12-LTSS
  • openssh >= 6.6p1-54.21.1
  • openssh-askpass-gnome >= 6.6p1-54.21.1
  • openssh-fips >= 6.6p1-54.21.1
  • openssh-helpers >= 6.6p1-54.21.1
Patchnames:
SUSE-SLE-SERVER-12-2018-2698
SUSE-SLE-SERVER-12-2018-2722
SUSE Linux Enterprise Server for SAP Applications 12 SP1
  • openssh >= 6.6p1-54.21.1
  • openssh-askpass-gnome >= 6.6p1-54.21.1
  • openssh-fips >= 6.6p1-54.21.1
  • openssh-helpers >= 6.6p1-54.21.1
Patchnames:
SUSE-SLE-SAP-12-SP1-2019-1080
SUSE-SLE-SAP-12-SP1-2019-1081
openSUSE Leap 15.0
  • openssh >= 7.6p1-lp150.8.6.1
  • openssh-askpass-gnome >= 7.6p1-lp150.8.6.1
  • openssh-askpass-gnome-debuginfo >= 7.6p1-lp150.8.6.1
  • openssh-cavs >= 7.6p1-lp150.8.6.1
  • openssh-cavs-debuginfo >= 7.6p1-lp150.8.6.1
  • openssh-debuginfo >= 7.6p1-lp150.8.6.1
  • openssh-debugsource >= 7.6p1-lp150.8.6.1
  • openssh-fips >= 7.6p1-lp150.8.6.1
  • openssh-helpers >= 7.6p1-lp150.8.6.1
  • openssh-helpers-debuginfo >= 7.6p1-lp150.8.6.1
Patchnames:
openSUSE-2019-914
openSUSE-2019-942


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
CaaS Platform 1.0 openssh Already fixed
CaaS Platform 2.0 openssh Already fixed
CaaS Platform 3.0 openssh Already fixed
OpenStack Cloud Magnum Orchestration 7.0 openssh Already fixed
SUSE Linux Enterprise Desktop 12 SP3 openssh Already fixed
SUSE Linux Enterprise Desktop 12 SP4 openssh Already fixed
SUSE Linux Enterprise High Performance Computing 12 openssh Already fixed
SUSE Linux Enterprise Module for Basesystem 15 GA openssh Already fixed
SUSE Linux Enterprise Module for Server Applications 15 GA openssh Already fixed
SUSE Linux Enterprise Server 11 SP3 LTSS openssh Already fixed
SUSE Linux Enterprise Server 12 GA LTSS openssh Already fixed
SUSE Linux Enterprise Server 12 SP1 LTSS openssh Already fixed
SUSE Linux Enterprise Server 12 SP2 LTSS openssh Already fixed
SUSE Linux Enterprise Server 12 SP3 openssh Already fixed
SUSE Linux Enterprise Server 12 SP4 openssh Already fixed
SUSE Linux Enterprise Server for SAP Applications 11 SP3 openssh Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 GA openssh Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP2 openssh Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP3 openssh Already fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP4 openssh Already fixed