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CVE-2023-1668

HIGH
8.2
CVSS Score
Published: April 10, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:28 AM UTC
8 products affected across 4 vendorsDebian LinuxOpenShift Container PlatformVirtualization

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Severity
HIGH8.2
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Open Vswitch· Cloudbase
95%
1.5.0 ≤ v < 2.13.112.14.0 ≤ v < 2.14.92.15.0 ≤ v < 2.15.82.16.0 ≤ v < 2.16.72.17.0 ≤ v < 2.17.63.0.0 ≤ v < 3.0.43.1.0
Affected range stops below 2.13.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.14.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.15.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.16.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.17.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.0.4, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
11.0
Fast Datapath· Red Hatrpm
95%
All versions
redhat-enterprise-linux (environment)
OpenShift Container Platform· Red Hatcontainer
95%
4.0
OpenStack Platform· Red Hatrpm
95%
16.116.217.0
Virtualization· Red Hatrpm
95%
4.0
Openvswitch· Openvswitch
60%
All versions
Enterprise Linux· Red Hatrpmdevice
80%
All versions

References (6)

Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2137666
Mailing List
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/05/msg00000.html
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2GUNS3WSJG4TUDKZ5L7FXGJMVOD6EJZ/
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202311-16
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2023/dsa-5387
Mailing ListMitigationPatch
Source: [email protected]
https://www.openwall.com/lists/oss-security/2023/04/06/1

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-670

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