CVE & CISA-KEV Catalog

CVE-2023-1668

HIGH
8.2
CVSS v3
NVD

Description

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.

CWE-670

How to fix

Remediation Available
openvswitchDebian
Fixed in:2.15.0+ds1-2+deb11u4CVE-2023-1668
Fixed in:3.1.0-2CVE-2023-1668
Fixed in:3.1.0-2CVE-2023-1668
Fixed in:3.1.0-2CVE-2023-1668
redhat-release-virtualization-hostRed Hat / RHEL
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
redhat-release-virtualization-hostRocky
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
redhat-release-virtualization-host-contentRed Hat / RHEL
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
redhat-release-virtualization-host-contentRocky
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
redhat-virtualization-hostRed Hat / RHEL
Fixed in:0:4.5.3-202306050942_8.6RHSA-2023:3491
redhat-virtualization-hostRocky
Fixed in:0:4.5.3-202306050942_8.6RHSA-2023:3491
redhat-virtualization-host-image-updateRed Hat / RHEL
Fixed in:0:4.5.3-202306050942_8.6RHSA-2023:3491
redhat-virtualization-host-image-updateRocky
Fixed in:0:4.5.3-202306050942_8.6RHSA-2023:3491
redhat-virtualization-host-image-update-placeholderRed Hat / RHEL
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
redhat-virtualization-host-image-update-placeholderRocky
Fixed in:0:4.5.3-7.el8evRHSA-2023:3491
openvswitchUbuntu
Fixed in:2.9.8-0ubuntu0.18.04.5USN-6068-1
Fixed in:2.13.8-0ubuntu1.2USN-6068-1
Fixed in:2.17.5-0ubuntu0.22.04.2USN-6068-1
Fixed in:3.0.3-0ubuntu0.22.10.3USN-6068-1
openvswitch-commonUbuntu
Fixed in:2.9.8-0ubuntu0.18.04.5USN-6068-1
Fixed in:2.13.8-0ubuntu1.2USN-6068-1
Fixed in:2.17.5-0ubuntu0.22.04.2USN-6068-1
Fixed in:3.0.3-0ubuntu0.22.10.3USN-6068-1
python-openvswitchUbuntu
Fixed in:2.9.8-0ubuntu0.18.04.5USN-6068-1
python3-openvswitchUbuntu
Fixed in:2.9.8-0ubuntu0.18.04.5USN-6068-1
Fixed in:2.13.8-0ubuntu1.2USN-6068-1
Fixed in:2.17.5-0ubuntu0.22.04.2USN-6068-1
Fixed in:3.0.3-0ubuntu0.22.10.3USN-6068-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

1.22%probability of exploitation in 30 days
65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Third-Party Advisory2
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-23.