openvswitch: Error during bundle commit in ofproto/ofproto.c:ofproto_rule_insert__() allows for crash
Published Sep 19, 2018
7.5
HIGHCVSS 3.0
EPSS 2.53%
Description
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.
Affected products
No data.
Configuration 1
- ≥ 2.7.0 · ≤ 2.7.6
Configuration 3
- 16.04
- 18.04
No data.
Fast Datapath for Red Hat Enterprise Linux 7
openvswitch-0:2.9.0-70.el7fdp.1
Fixed · RHSA-2018:3500
Red Hat OpenStack Platform 10.0 (Newton)
openvswitch-0:2.9.0-83.el7fdp.1
Fixed · RHSA-2019:0053
Red Hat OpenStack Platform 13.0 (Queens)
openvswitch-0:2.9.0-83.el7fdp.1
Fixed · RHSA-2019:0081
Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS
openvswitch-0:2.9.0-70.el7fdp.1
Fixed · RHSA-2018:3500
Fast Datapath for RHEL 7
openvswitch2.10
Not affected
Fast Datapath for RHEL 8
openvswitch2.10
Not affected
Fast Datapath for RHEL 8
openvswitch2.11
Not affected
Red Hat OpenShift Container Platform 3.2
node
Not affected
Red Hat OpenShift Container Platform 3.3
node
Not affected
Red Hat OpenShift Container Platform 3.4
node
Not affected
Red Hat OpenShift Enterprise 3.0
openvswitch
Not affected
Red Hat OpenShift Enterprise 3.1
node
Not affected
Red Hat OpenStack Platform 12 (Pike)
openvswitch
Will not fix
Red Hat OpenStack Platform 14 (Rocky)
openvswitch
Not affected
Red Hat OpenStack Platform 8 (Liberty)
openvswitch
Not affected
Red Hat OpenStack Platform 9 (Mitaka)
openvswitch
Not affected
Red Hat Virtualization 4
redhat-virtualization-host
Affected
Red Hat Virtualization 4
rhvm-appliance
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Fast Datapath for Red Hat Enterprise Linux 7 | openvswitch-0:2.9.0-70.el7fdp.1 | Fixed | RHSA-2018:3500 |
| Red Hat OpenStack Platform 10.0 (Newton) | openvswitch-0:2.9.0-83.el7fdp.1 | Fixed | RHSA-2019:0053 |
| Red Hat OpenStack Platform 13.0 (Queens) | openvswitch-0:2.9.0-83.el7fdp.1 | Fixed | RHSA-2019:0081 |
| Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS | openvswitch-0:2.9.0-70.el7fdp.1 | Fixed | RHSA-2018:3500 |
| Fast Datapath for RHEL 7 | openvswitch2.10 | Not affected | n/a |
| Fast Datapath for RHEL 8 | openvswitch2.10 | Not affected | n/a |
| Fast Datapath for RHEL 8 | openvswitch2.11 | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.2 | node | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.3 | node | Not affected | n/a |
| Red Hat OpenShift Container Platform 3.4 | node | Not affected | n/a |
| Red Hat OpenShift Enterprise 3.0 | openvswitch | Not affected | n/a |
| Red Hat OpenShift Enterprise 3.1 | node | Not affected | n/a |
| Red Hat OpenStack Platform 12 (Pike) | openvswitch | Will not fix | n/a |
| Red Hat OpenStack Platform 14 (Rocky) | openvswitch | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | openvswitch | Not affected | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | openvswitch | Not affected | n/a |
| Red Hat Virtualization 4 | redhat-virtualization-host | Affected | n/a |
| Red Hat Virtualization 4 | rhvm-appliance | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.53% (0.02531) | 84.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.53% (0.02531) | 82.81th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.33% (0.00334) | 71.47th | v3 (v2023.03.01) |
| Jul 4, 2024 | 0.33% (0.00334) | 71.38th | v3 (v2023.03.01) |
| May 8, 2024 | 0.47% (0.00473) | 75.56th | v3 (v2023.03.01) |
| Feb 10, 2024 | 0.45% (0.00445) | 74.21th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.49% (0.00487) | 75.31th | v3 (v2023.03.01) |
| Sep 13, 2023 | 0.49% (0.00487) | 73.06th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.42% (0.00418) | 70.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.38% (0.00381) | 68.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v1 |
| Jan 6, 2022 | 1.25% (0.01247) | 29.93th | v1 |
| Sep 1, 2021 | 1.25% (0.01247) | 68.62th | v1 |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (9)
- https://access.redhat.com/errata/RHSA-2018:3500 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0053 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0081 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-17205 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1632525 Issue Tracking
- https://github.com/openvswitch/ovs/commit/0befd1f3745055c32940f5faf9559be6a14395e6 x_refsource_MISCExploitPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-17205
- https://usn.ubuntu.com/3873-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-17205
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2018:3500 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2019:0053 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/errata/RHSA-2019:0081 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-17205 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1632525 | Issue Tracking | |
| https://github.com/openvswitch/ovs/commit/0befd1f3745055c32940f5faf9559be6a14395e6 | x_refsource_MISCExploitPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-17205 | ||
| https://usn.ubuntu.com/3873-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-17205 |
Change history (0)
No recorded changes yet.