Bug 1998052 (CVE-2021-40085)
Summary: | CVE-2021-40085 openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts | ||
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Product: | [Other] Security Response | Reporter: | Dhananjay Arunesh <darunesh> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED ERRATA | QA Contact: | |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | unspecified | CC: | aileenc, bcafarel, bibryam, chazlett, chrisw, dalvarez, dbecker, drieden, ggaughan, hbraun, janstey, jjoyce, jochrist, jschluet, lhh, lpeer, mburns, mkaplan, pantinor, rhos-maint, sclewis, scohen, security-response-team, slinaber, slong, srevivo |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | neutron 16.4.1, neutron 17.2.1, neutron 18.1.1 | Doc Type: | If docs needed, set a value |
Doc Text: |
An input-validation flaw was found in openstack-neutron, where an authenticated attacker could change the dnsmasq configuration. By crafting extra_dhcp_opts values, the attacker could crash the dnsmasq, change parameters for tenants sharing the same interface, or otherwise alter that daemon’s behavior. This flaw might also be used to trigger a configuration parsing buffer overflow in versions of dnsmasq prior to 2.81. The highest threat from this vulnerability is to system availability, but also threatens data confidentiality and integrity.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2021-09-10 00:21:09 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 1999832, 1999919, 1999920, 2000015, 2000785 | ||
Bug Blocks: | 1998050 |
Description
Dhananjay Arunesh
2021-08-26 11:08:35 UTC
Created openstack-neutron tracking bugs for this issue: Affects: openstack-rdo [bug 1999832] *** Bug 1997808 has been marked as a duplicate of this bug. *** Upstream patches: https://review.opendev.org/806750 (Ussuri) https://review.opendev.org/806749 (Victoria) https://review.opendev.org/806748 (Wallaby) https://review.opendev.org/806746 (Xena) This issue has been addressed in the following products: Red Hat OpenStack Platform 16.1 Via RHSA-2021:3481 https://access.redhat.com/errata/RHSA-2021:3481 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-40085 This issue has been addressed in the following products: Red Hat OpenStack Platform 10.0 (Newton) Via RHSA-2021:3502 https://access.redhat.com/errata/RHSA-2021:3502 This issue has been addressed in the following products: Red Hat OpenStack Platform 13.0 - ELS Red Hat OpenStack Platform 13.0 (Queens) for RHEL 7.6 EUS Via RHSA-2021:3503 https://access.redhat.com/errata/RHSA-2021:3503 This issue has been addressed in the following products: Red Hat OpenStack Platform 16.2 Via RHSA-2021:3488 https://access.redhat.com/errata/RHSA-2021:3488 |