Difference between revisions of "OSSN/OSSN-0093"

Revision as of 20:00, 14 March 2024

Unsafe Environment Handling in MuranoPL

Summary

The Murano service's MuranoPL extension to the YAQL language fails to sanitize the supplied environment, leading to potential leakage of sensitive service account information. Murano is an inactive project, so no fix is currently under development for this vulnerability. It is strongly recommended that any OpenStack deployments disable or fully remove Murano, if installed, at the earliest opportunity.

Affected Services / Software

Murano (all versions)

Discussion

The YAQL interpreter project has released a new major version (3.0.0) which removes support for format strings, a feature necessary to exploit this condition in MuranoPL. Because Murano is not considered under active maintenance in OpenStack, its complete removal from all deployments is still strongly advised.

Note that this behavior change in YAQL means configurations relying on string formatting will no longer be interpreted the same after upgrading, which could cause them to not work as intended by their users in services which accept YAQL (including Heat and Mistral). Reliance on that feature is considered to be unusual, but users should be made aware in case it negatively impacts their configuration.

Recommended Actions

Disable the Murano service in, or fully remove it from, all OpenStack deployments at the earliest opportunity.

Contacts / References

Author:

Jeremy Stanley, OpenStack Vulnerability Coordinator

This OSSN : https://wiki.openstack.org/wiki/OSSN/OSSN-0093

Original LaunchPad Bug : https://launchpad.net/bugs/2048114

Mailing List : [security-sig] openstack-discuss@lists.openstack.org

@@ Line 1: / Line 1: @@
-== Unresolved Vulnerability in Murano ==
+== Unsafe Environment Handling in MuranoPL  ==
 === Summary ===
-A severe security vulnerability in all versions of the Murano service will be disclosed at a later date. Murano is an inactive project, so no fix is currently under development for this vulnerability. It is strongly recommended that any OpenStack deployments disable or fully remove Murano, if installed, at the earliest opportunity. This security note will be amended at the time of public disclosure to include further details and context, but '''action should be taken as soon as possible''' in order to minimize the risk it poses.
+The Murano service's MuranoPL extension to the YAQL language fails to sanitize the supplied environment, leading to potential leakage of sensitive service account information. Murano is an inactive project, so no fix is currently under development for this vulnerability. It is strongly recommended that any OpenStack deployments disable or fully remove Murano, if installed, at the earliest opportunity.
 === Affected Services / Software ===
-Murano
+Murano (all versions)
 === Discussion ===
-This security note is a redacted placeholder, and will be amended with complete details once the associated bug report becomes public.
+The YAQL interpreter project has released a new major version (3.0.0) which removes support for format strings, a feature necessary to exploit this condition in MuranoPL. Because Murano is not considered under active maintenance in OpenStack, its complete removal from all deployments is still strongly advised.
+Note that this behavior change in YAQL means configurations relying on string formatting will no longer be interpreted the same after upgrading, which could cause them to not work as intended by their users in services which accept YAQL (including Heat and Mistral). Reliance on that feature is considered to be unusual, but users should be made aware in case it negatively impacts their configuration.
 ===  Recommended Actions ===
@@ Line 25: / Line 27: @@
 This OSSN : https://wiki.openstack.org/wiki/OSSN/OSSN-0093
-Original LaunchPad Bug : https://launchpad.net/bugs/2048114 (not yet public)
+Original LaunchPad Bug : https://launchpad.net/bugs/2048114
 Mailing List : [security-sig] openstack-discuss@lists.openstack.org