What’s Vulnerable › Vulnerabilities
CVE-2023-1668
- Severity: high (CVSS 8.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-04-10 · updated 2026-06-17
- Weakness: CWE-670
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 products
- Cloudbase Open Vswitch: from 1.5.0 before 2.13.11; from 2.14.0 before 2.14.9; from 2.15.0 before 2.15.8; from 2.16.0 before 2.16.7; from 2.17.0 before 2.17.6; from 3.0.0 before 3.0.4 — fixed in 2.13.11, 2.14.9, 2.15.8, 2.16.7, 2.17.6, 3.0.4
- Debian Linux: 11.0
- RedHat Fast Datapath: all versions
- Red Hat OpenShift Container Platform 4.18: 4.0
- nova_libvirt container provided by the Red Hat OpenStack Platform: 16.1, 16.2, 17.0
- RedHat Virtualization: 4.0
How to fix
Upgrade to a fixed version: Cloudbase Open Vswitch 2.13.11, 2.14.9, 2.15.8, 2.16.7. Check the vendor advisory for mitigations.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2137666
- https://lists.debian.org/debian-lts-announce/2023/05/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2GUNS3WSJG4TUDKZ5L7FXGJMVOD6EJZ/
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2023/dsa-5387
- https://www.openwall.com/lists/oss-security/2023/04/06/1
- https://bugzilla.redhat.com/show_bug.cgi?id=2137666
- https://lists.debian.org/debian-lts-announce/2023/05/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2GUNS3WSJG4TUDKZ5L7FXGJMVOD6EJZ/
- https://security.gentoo.org/glsa/202311-16
- https://www.debian.org/security/2023/dsa-5387
- https://www.openwall.com/lists/oss-security/2023/04/06/1
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