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NVD / CVE Program· CNA redhat

CVE-2023-1668: A flaw was found in openvswitch (OVS).

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 68.4% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: openvswitch (Debian:10) 2.10.7+ds1-0+deb10u4; openvswitch (Debian:11) 2.15.0+ds1-2+deb11u4; openvswitch (Debian:12) 3.1.0-2.

Low priority for now. Upgrade to openvswitch (Debian:10) 2.10.7+ds1-0+deb10u4; openvswitch (Debian:11) 2.15.0+ds1-2+deb11u4; openvswitch (Debian:12) 3.1.0-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow, but with an incorrect action, possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.

HighCVSS 8.2 · v3.1—No exploit Fix available
Published
Apr 10, 2023
Updated
Jun 17, 2026
EPSS
1.2% · 68th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-1668

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
cloudbaseopen vswitch
debiandebian linux
redhatopenshift container platform
redhatopenstack platform
redhatvirtualization
redhatfast datapath
redhatenterprise linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • cloudbase open vswitch1.5.0 and later · before 2.13.11
  • cloudbase open vswitch2.14.0 and later · before 2.14.9
  • cloudbase open vswitch2.15.0 and later · before 2.15.8
  • cloudbase open vswitch2.16.0 and later · before 2.16.7
  • cloudbase open vswitch2.17.0 and later · before 2.17.6
  • cloudbase open vswitch3.0.0 and later · before 3.0.4
  • cloudbase open vswitch3.1.0
  • debian debian linux11.0
  • redhat fast datapathall versions
  • redhat openshift container platform4.0
  • redhat openstack platform16.1
  • redhat openstack platform16.2
  • redhat openstack platform17.0
  • redhat virtualization4.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a openvswitch

    • unknownaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10openvswitchbefore 2.10.7+ds1-0+deb10u42.10.7+ds1-0+deb10u4
Debian:11openvswitchbefore 2.15.0+ds1-2+deb11u42.15.0+ds1-2+deb11u4
Debian:12openvswitchbefore 3.1.0-23.1.0-2
openSUSE:Leap 15.4openvswitchbefore 2.14.2-150400.24.9.12.14.2-150400.24.9.1
openSUSE:Leap 15.4openvswitchbefore 2.13.2-150200.9.22.12.13.2-150200.9.22.1
openSUSE:Leap 15.5openvswitch3before 3.1.0-150500.3.3.13.1.0-150500.3.3.1
openSUSE:Leap 15.6openvswitchbefore 3.1.7-150600.33.9.13.1.7-150600.33.9.1
openSUSE:Leap 15.6openvswitch3before 3.1.7-150500.3.25.13.1.7-150500.3.25.1
openSUSE:Tumbleweedopenvswitchbefore 3.1.0-14.13.1.0-14.1
Red Hat:enterprise_linux:8::fastdatapathnetwork-scripts-openvswitch2.13before 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathnetwork-scripts-openvswitch2.15before 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp
Red Hat:enterprise_linux:8::fastdatapathnetwork-scripts-openvswitch2.17before 0:2.17.0-88.el8fdp0:2.17.0-88.el8fdp
Red Hat:enterprise_linux:8::fastdatapathnetwork-scripts-openvswitch3.1before 0:3.1.0-17.el8fdp0:3.1.0-17.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13before 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13-debuginfobefore 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13-debugsourcebefore 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13-develbefore 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13-ipsecbefore 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.13-testbefore 0:2.13.0-214.el8fdp0:2.13.0-214.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.15before 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.15-debuginfobefore 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.15-debugsourcebefore 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.15-develbefore 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp
Red Hat:enterprise_linux:8::fastdatapathopenvswitch2.15-ipsecbefore 0:2.15.0-136.el8fdp0:2.15.0-136.el8fdp

+46

Same product

cloudbase: all records

Other highest-scoring records for the same primary product.

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:openvswitch3.1.0-2 · Debian:12Package registry (OSV)
opensuse:openvswitch2.13.2-150200.9.22.1 · openSUSE:Leap 15.4Package registry (OSV)
opensuse:openvswitch33.1.0-150500.3.3.1 · openSUSE:Leap 15.5Package registry (OSV)
red hat:network-scripts-openvswitch2.170:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:network-scripts-openvswitch3.10:3.1.0-17.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.170:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.17-debuginfo0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.17-debugsource0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.17-devel0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.17-ipsec0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch2.17-test0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch3.10:3.1.0-17.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:openvswitch3.1-debuginfo0:3.1.0-17.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:python3-openvswitch2.170:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
red hat:python3-openvswitch2.17-debuginfo0:2.17.0-88.el8fdp · Red Hat:enterprise_linux:8::fastdatapathPackage registry (OSV)
suse:openvswitch2.13.2-150200.9.22.1 · SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSPackage registry (OSV)
suse:openvswitch33.1.0-150500.3.3.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-670 · Always-Incorrect Control Flow Implementation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records