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ovn: egress ACLs may be bypassed via specially crafted UDP packet

🗓️ 05 Feb 2025 15:15:57Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

OVN flaw allows bypass of egress ACLs with crafted UDP packets if a logical switch has DNS records and egress ACLs.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64ovn23.030:23.03.3-22.el8fdpovn23.03-0:23.03.3-22.el8fdp.aarch64.rpm
Red Hat Enterprise Linux8ppc64leovn23.030:23.03.3-22.el8fdpovn23.03-0:23.03.3-22.el8fdp.ppc64le.rpm
Red Hat Enterprise Linux8s390xovn23.030:23.03.3-22.el8fdpovn23.03-0:23.03.3-22.el8fdp.s390x.rpm
Red Hat Enterprise Linux8x86_64ovn23.030:23.03.3-22.el8fdpovn23.03-0:23.03.3-22.el8fdp.x86_64.rpm
Red Hat Enterprise Linux8aarch64ovn23.03-central0:23.03.3-22.el8fdpovn23.03-central-0:23.03.3-22.el8fdp.aarch64.rpm
Red Hat Enterprise Linux8ppc64leovn23.03-central0:23.03.3-22.el8fdpovn23.03-central-0:23.03.3-22.el8fdp.ppc64le.rpm
Red Hat Enterprise Linux8s390xovn23.03-central0:23.03.3-22.el8fdpovn23.03-central-0:23.03.3-22.el8fdp.s390x.rpm
Red Hat Enterprise Linux8x86_64ovn23.03-central0:23.03.3-22.el8fdpovn23.03-central-0:23.03.3-22.el8fdp.x86_64.rpm
Red Hat Enterprise Linux8aarch64ovn23.03-central-debuginfo0:23.03.3-22.el8fdpovn23.03-central-debuginfo-0:23.03.3-22.el8fdp.aarch64.rpm
Red Hat Enterprise Linux8ppc64leovn23.03-central-debuginfo0:23.03.3-22.el8fdpovn23.03-central-debuginfo-0:23.03.3-22.el8fdp.ppc64le.rpm
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18 Mar 2026 02:50Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.18.1
EPSS0.00832
SSVC
7