Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2016-9595

Improper Link Resolution Before File Access ('Link Following')

Published: Jul 27, 2018 | Modified: Nov 07, 2023
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
3.6 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:P
RedHat/V2
6.9 MODERATE
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V3
7.3 MODERATE
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-9595
CWEhttps://cwe.mitre.org/data/definitions/59.html

A flaw was found in katello-debug before 3.4.0 where certain scripts and log files used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Katello Theforeman * 3.4.0 (excluding)
Red Hat Satellite 6.3 for RHEL 7 RedHat candlepin-0:2.1.14-1.el7 *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-0:1.15.6.34-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-bootloaders-redhat-0:201801241201-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-discovery-image-0:3.4.4-1 *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-installer-1:1.15.6.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-proxy-0:1.15.6.4-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-selinux-0:1.15.6.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat hiera-0:1.3.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-0:3.4.5-15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-certs-tools-0:2.4.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-client-bootstrap-0:1.5.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-installer-base-0:3.4.5.26-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-selinux-0:3.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat kobo-0:0.5.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-0:2.13.4.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-docker-0:2.4.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-katello-0:1.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-ostree-0:1.2.1.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-puppet-0:2.13.4-3.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-rpm-0:2.13.4.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat puppet-foreman_scap_client-0:0.3.16-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat python-zope-interface-0:4.0.5-4.el7 *
Red Hat Satellite 6.3 for RHEL 7 RedHat redhat-access-insights-puppet-0:0.0.9-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-foreman_scap_client-0:0.3.0-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo-0:2.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo_parsers-0:0.1.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo_wizards-0:0.0.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_dhcp_remote_isc-0:0.0.2.1-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_discovery-0:1.0.4-3.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_discovery_image-0:1.0.9-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_dynflow-0:0.1.10-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_openscap-0:0.6.9-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_pulp-0:1.3.0-1.git.0.b5c2768.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_remote_execution_ssh-0:0.1.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-tilt-0:1.3.7-2.git.0.3b416c9.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat satellite-0:6.3.0-23.0.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat satellite-installer-0:6.3.0.12-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-bastion-0:5.1.1.4-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_bootdisk-0:10.0.2.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_discovery-0:9.1.5.3-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_docker-0:3.1.0.3-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_hooks-0:0.3.14-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_openscap-0:0.7.11-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-redhat_access-0:2.0.13-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_remote_execution-0:1.3.7.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_remote_execution_core-0:1.0.6-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-tasks-0:0.9.6.4-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-tasks-core-0:0.1.8-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_templates-0:5.0.1-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_theme_satellite-0:1.0.4.16-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_virt_who_configure-0:0.1.9-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli-0:0.11.0.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_csv-0:2.3.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman-0:0.11.0.5-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_admin-0:0.0.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_bootdisk-0:0.1.3.3-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_discovery-0:1.0.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_docker-0:0.0.6-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_openscap-0:0.1.5-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_remote_execution-0:0.0.6-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_tasks-0:0.0.12-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_virt_who_configure-0:0.0.3-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_katello-0:0.11.3.5-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-katello-0:3.4.5.58-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-ovirt_provision_plugin-0:1.0.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-smart_proxy_dynflow_core-0:0.1.10-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat candlepin-0:2.1.14-1.el7 *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-0:1.15.6.34-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-bootloaders-redhat-0:201801241201-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-discovery-image-0:3.4.4-1 *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-installer-1:1.15.6.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-proxy-0:1.15.6.4-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat foreman-selinux-0:1.15.6.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat hiera-0:1.3.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-0:3.4.5-15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-certs-tools-0:2.4.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-client-bootstrap-0:1.5.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-installer-base-0:3.4.5.26-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat katello-selinux-0:3.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat kobo-0:0.5.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-0:2.13.4.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-docker-0:2.4.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-katello-0:1.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-ostree-0:1.2.1.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-puppet-0:2.13.4-3.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat pulp-rpm-0:2.13.4.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat puppet-foreman_scap_client-0:0.3.16-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat python-zope-interface-0:4.0.5-4.el7 *
Red Hat Satellite 6.3 for RHEL 7 RedHat redhat-access-insights-puppet-0:0.0.9-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-foreman_scap_client-0:0.3.0-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo-0:2.0.2-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo_parsers-0:0.1.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-kafo_wizards-0:0.0.1-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_dhcp_remote_isc-0:0.0.2.1-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_discovery-0:1.0.4-3.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_discovery_image-0:1.0.9-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_dynflow-0:0.1.10-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_openscap-0:0.6.9-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_pulp-0:1.3.0-1.git.0.b5c2768.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-smart_proxy_remote_execution_ssh-0:0.1.6-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat rubygem-tilt-0:1.3.7-2.git.0.3b416c9.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat satellite-0:6.3.0-23.0.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat satellite-installer-0:6.3.0.12-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-bastion-0:5.1.1.4-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_bootdisk-0:10.0.2.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_discovery-0:9.1.5.3-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_docker-0:3.1.0.3-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_hooks-0:0.3.14-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_openscap-0:0.7.11-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-redhat_access-0:2.0.13-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_remote_execution-0:1.3.7.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_remote_execution_core-0:1.0.6-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-tasks-0:0.9.6.4-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman-tasks-core-0:0.1.8-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_templates-0:5.0.1-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_theme_satellite-0:1.0.4.16-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-foreman_virt_who_configure-0:0.1.9-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli-0:0.11.0.1-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_csv-0:2.3.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman-0:0.11.0.5-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_admin-0:0.0.8-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_bootdisk-0:0.1.3.3-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_discovery-0:1.0.0-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_docker-0:0.0.6-2.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_openscap-0:0.1.5-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_remote_execution-0:0.0.6-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_tasks-0:0.0.12-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_foreman_virt_who_configure-0:0.0.3-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-hammer_cli_katello-0:0.11.3.5-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-katello-0:3.4.5.58-1.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-ovirt_provision_plugin-0:1.0.2-1.fm1_15.el7sat *
Red Hat Satellite 6.3 for RHEL 7 RedHat tfm-rubygem-smart_proxy_dynflow_core-0:0.1.10-1.fm1_15.el7sat *

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References

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