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CVE-2023-1668

HIGHCVSS 8.2/10EPSS 1.22%

Last modified

CVE-2023-1668 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.2/10

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

EPSS Probability
1.22%

64.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CloudbaseOpen Vswitch>= 1.5.0, < 2.13.11
CloudbaseOpen Vswitch>= 2.14.0, < 2.14.9
CloudbaseOpen Vswitch>= 2.15.0, < 2.15.8
CloudbaseOpen Vswitch>= 2.16.0, < 2.16.7
CloudbaseOpen Vswitch>= 2.17.0, < 2.17.6
CloudbaseOpen Vswitch>= 3.0.0, < 3.0.4
CloudbaseOpen Vswitch3.1.0
DebianDebian Linux11.0
RedhatOpenshift Container Platform4.0
RedhatOpenstack Platform16.1
RedhatOpenstack Platform16.2
RedhatOpenstack Platform17.0
RedhatVirtualization4.0
RedhatFast DatapathAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-1668?
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.
How severe is CVE-2023-1668?
CVE-2023-1668 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.
How do I fix CVE-2023-1668?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-1668?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST