Out-of-bounds read in Open vSwitch - CVE-2022-32166

Vulnerability identifier: #VU68717

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-32166

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the minimasks() function in flow.c. A remote attacker can pass specially crafted data to the application, trigger an out-of-bounds read error and crash the service.

Open vSwitch
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
SUSE Linux Enterprise Server 12 SP2 BCL
SUSE Linux Enterprise Server 12 SP4 ESPOS
SUSE Linux Enterprise Server 12 SP4 LTSS
SUSE Linux Enterprise Server
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openvswitch-common (Ubuntu package)
openvswitch-dpdk-debuginfo
openvswitch-dpdk-switch
openvswitch-switch-debuginfo
openvswitch-debugsource
openvswitch
openvswitch-dpdk
openvswitch-debuginfo
openvswitch-dpdk-debugsource
openvswitch-dpdk-switch-debuginfo
openvswitch-switch
libopenvswitch-2_8-0-debuginfo
libopenvswitch-2_8-0
libopenvswitch-2_11-0
libopenvswitch-2_11-0-debuginfo
openvswitch-ovn-vtep-debuginfo
openvswitch-ovn-host-debuginfo
openvswitch-ovn-vtep
openvswitch-ovn-common-debuginfo
openvswitch-ovn-docker
openvswitch-ovn-central
python3-ovs-debuginfo
openvswitch-ovn-host
openvswitch-ovn-central-debuginfo
openvswitch-ovn-common
libdpdk-18_11-debuginfo
libdpdk-18_11

Install updates from vendor's website.

Open vSwitch - update to 2.5.1
openvswitch-common (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 2.9.8-0ubuntu0.18.04.3
openvswitch-dpdk-debuginfo - update to 2.5.11-25.34.1
openvswitch-dpdk-switch - update to 2.5.11-25.34.1
openvswitch-switch-debuginfo - update to 2.5.11-25.34.1
openvswitch-debugsource - addressed in versions 2.5.11-25.34.1, 2.8.10-4.33.1, 2.11.5-3.12.1, 2.11.5-150100.3.18.2
openvswitch - addressed in versions 2.5.11-25.34.1, 2.8.10-4.33.1, 2.11.5-3.12.1
openvswitch-dpdk - update to 2.5.11-25.34.1
openvswitch-debuginfo - addressed in versions 2.5.11-25.34.1, 2.8.10-4.33.1, 2.11.5-3.12.1, 2.11.5-150100.3.18.2
openvswitch-dpdk-debugsource - update to 2.5.11-25.34.1
openvswitch-dpdk-switch-debuginfo - update to 2.5.11-25.34.1
openvswitch-switch - update to 2.5.11-25.34.1
libopenvswitch-2_8-0-debuginfo - update to 2.8.10-4.33.1
libopenvswitch-2_8-0 - update to 2.8.10-4.33.1
libopenvswitch-2_11-0 - addressed in versions 2.11.5-3.12.1, 2.11.5-150100.3.18.2
libopenvswitch-2_11-0-debuginfo - addressed in versions 2.11.5-3.12.1, 2.11.5-150100.3.18.2
openvswitch-ovn-vtep-debuginfo - update to 2.11.5-150100.3.18.2
openvswitch-ovn-host-debuginfo - update to 2.11.5-150100.3.18.2
openvswitch-ovn-vtep - update to 2.11.5-150100.3.18.2
openvswitch-ovn-common-debuginfo - update to 2.11.5-150100.3.18.2
openvswitch-ovn-docker - update to 2.11.5-150100.3.18.2
openvswitch-ovn-central - update to 2.11.5-150100.3.18.2
python3-ovs-debuginfo - update to 2.11.5-150100.3.18.2
openvswitch-ovn-host - update to 2.11.5-150100.3.18.2
openvswitch-ovn-central-debuginfo - update to 2.11.5-150100.3.18.2
openvswitch-ovn-common - update to 2.11.5-150100.3.18.2
libdpdk-18_11-debuginfo - update to 18.11.9-150100.4.23.1
libdpdk-18_11 - update to 18.11.9-150100.4.23.1

• https://github.com/cloudbase/ovs/commit/2ed6505555cdcb46f9b1f0329d1491b75290fc73
• https://bugzilla.redhat.com/show_bug.cgi?id=2130577

• Denial of service in Open vSwitch
• Ubuntu update for openvswitch
• Ubuntu update for openvswitch
• SUSE update for openvswitch
• SUSE update for openvswitch
• SUSE update for openvswitch
• SUSE update for openvswitch