Upstream information

CVE-2018-7169 at MITRE

Description

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

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 6.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Access Vector Network Local
Access Complexity Low Low
Privileges Required None Low
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact Low High
Integrity Impact None None
Availability Impact None None
SUSE Bugzilla entry: 1081294 [REOPENED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
Openstack Cloud Magnum Orchestration 7
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2018-446
SUSE CaaS Platform ALL
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-CAASP-ALL-2018-446
SUSE Linux Enterprise Desktop 12 SP2
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-SLE-DESKTOP-12-SP2-2018-446
SUSE Linux Enterprise Desktop 12 SP3
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-SLE-DESKTOP-12-SP3-2018-446
SUSE Linux Enterprise Module for Basesystem 15
  • shadow >= 4.5-5.39
Patchnames:
SUSE Linux Enterprise Module for Basesystem 15 GA shadow
SUSE Linux Enterprise Server 12 SP2
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-2018-446
SUSE Linux Enterprise Server 12 SP3
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2018-446
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2
  • shadow >= 4.2.1-27.6.1
Patchnames:
SUSE-SLE-RPI-12-SP2-2018-446
openSUSE Leap 15.0
  • shadow >= 4.5-lp150.5.20
Patchnames:
openSUSE Leap 15.0 GA shadow
openSUSE Leap 42.3
  • shadow >= 4.2.1-13.1
  • shadow-debuginfo >= 4.2.1-13.1
  • shadow-debugsource >= 4.2.1-13.1
Patchnames:
openSUSE-2018-249


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 shadow Released
CaaS Platform 2.0 shadow Released
OpenStack Cloud Magnum Orchestration 7.0 shadow Released
SUSE Linux Enterprise Desktop 12 SP2 shadow Released
SUSE Linux Enterprise Desktop 12 SP3 shadow Released
SUSE Linux Enterprise Server 12 SP2 shadow Released
SUSE Linux Enterprise Server 12 SP3 shadow Released