A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openvswitch: limitation in the OVS packet parsing in userspace leads to DoS (CVE-2020-35498)

  - openvswitch: Integer Underflow in Organization Specific TLV (CVE-2022-4338)

  - An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting     parse_group_prop_ntr_selection_method in lib/ofp-util.c. When decoding a group mod, it validates the group     type and command after the whole group mod has been decoded. The OF1.5 decoder, however, tries to use the     type and command earlier, when it might still be invalid. This causes an assertion failure (via     OVS_NOT_REACHED). ovs-vswitchd does not enable support for OpenFlow 1.5 by default. (CVE-2018-17204)

  - An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in     ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order.
    If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries     to revert back all previous flows that were successfully applied from the same bundle. This is possible     since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old     flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for     new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.
    (CVE-2018-17205)

  - An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6. The decode_bundle function inside     lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding. (CVE-2018-17206)

  - The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote     attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that     requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka     a Tuple Space Explosion (TSE) attack. (CVE-2019-25076)

  - Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP     (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action. (CVE-2021-36980)

  - A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker     could use this flaw to potentially exhaust available memory by keeping sending packet fragments.
    (CVE-2021-3905)

  - An out-of-bounds read in Organization Specific TLV was found in various versions of OpenvSwitch.
    (CVE-2022-4337)

  - 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. (CVE-2023-1668)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 9 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openvswitch: ip proto 0 triggers incorrect handling (CVE-2023-1668)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - openvswitch: limitation in the OVS packet parsing in userspace leads to DoS (CVE-2020-35498)

  - openvswitch: Integer Underflow in Organization Specific TLV (CVE-2022-4338)

  - The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote     attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that     requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka     a Tuple Space Explosion (TSE) attack. (CVE-2019-25076)

  - Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP     (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action. (CVE-2021-36980)

  - A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker     could use this flaw to potentially exhaust available memory by keeping sending packet fragments.
    (CVE-2021-3905)

  - An out-of-bounds read in Organization Specific TLV was found in various versions of OpenvSwitch.
    (CVE-2022-4337)

  - 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. (CVE-2023-1668)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-1f26ce7731 advisory.

  - A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which     may result in a denial of service and invalid memory accesses. Triggering this issue requires that     hardware offloading via the netlink path is enabled. (CVE-2023-3966)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-a4530e9bfe advisory.

  - A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which     may result in a denial of service and invalid memory accesses. Triggering this issue requires that     hardware offloading via the netlink path is enabled. (CVE-2023-3966)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5640 advisory.

  - A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which     may result in a denial of service and invalid memory accesses. Triggering this issue requires that     hardware offloading via the netlink path is enabled. (CVE-2023-3966)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

  - openvswitch 2.17.8 was discovered to contain a memory leak via the function xmalloc__ in     openvswitch-2.17.8/lib/util.c. (CVE-2024-22563)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6690-1 advisory.

  - A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which     may result in a denial of service and invalid memory accesses. Triggering this issue requires that     hardware offloading via the netlink path is enabled. (CVE-2023-3966)

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1234 advisory.

  - openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet (CVE-2023-3966)

  - openvswitch: openvswitch don't match packets on nd_target field (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1227 advisory.

  - openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet (CVE-2023-3966)

  - openvswitch: openvswitch don't match packets on nd_target field (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1235 advisory.

  - openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet (CVE-2023-3966)

  - openvswitch: openvswitch don't match packets on nd_target field (CVE-2023-5366)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3734 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4714-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4666-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4657-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4661-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4571-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4573-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 ESM / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-6514-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4508-1 advisory.

  - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual     machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted     packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary     IP addresses. (CVE-2023-5366)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
195853	RHEL 8 : openvswitch (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
195831	RHEL 9 : openvswitch (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
195808	RHEL 7 : openvswitch (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
194715	Fedora 40 : openvswitch (2024-1f26ce7731)	Nessus	Fedora Local Security Checks	medium
192171	Fedora 39 : openvswitch (2024-a4530e9bfe)	Nessus	Fedora Local Security Checks	medium
192117	Debian dsa-5640 : openvswitch-common - security update	Nessus	Debian Local Security Checks	medium
191928	Ubuntu 20.04 LTS / 22.04 LTS / 23.10 : Open vSwitch vulnerabilities (USN-6690-1)	Nessus	Ubuntu Local Security Checks	medium
191724	RHEL 8 : openvswitch2.17 (RHSA-2024:1234)	Nessus	Red Hat Local Security Checks	medium
191723	RHEL 9 : openvswitch3.1 (RHSA-2024:1227)	Nessus	Red Hat Local Security Checks	medium
191722	RHEL 8 : openvswitch3.1 (RHSA-2024:1235)	Nessus	Red Hat Local Security Checks	medium
190675	Debian dla-3734 : openvswitch-common - security update	Nessus	Debian Local Security Checks	medium
186746	SUSE SLES15 Security Update : openvswitch (SUSE-SU-2023:4714-1)	Nessus	SuSE Local Security Checks	medium
186642	SUSE SLES15 / openSUSE 15 Security Update : openvswitch (SUSE-SU-2023:4666-1)	Nessus	SuSE Local Security Checks	medium
186638	SUSE SLES15 / openSUSE 15 Security Update : openvswitch3 (SUSE-SU-2023:4657-1)	Nessus	SuSE Local Security Checks	medium
186636	SUSE SLES15 / openSUSE 15 Security Update : openvswitch (SUSE-SU-2023:4661-1)	Nessus	SuSE Local Security Checks	medium
186348	SUSE SLES15 / openSUSE 15 Security Update : openvswitch (SUSE-SU-2023:4571-1)	Nessus	SuSE Local Security Checks	medium
186346	SUSE SLES15 / openSUSE 15 Security Update : openvswitch (SUSE-SU-2023:4573-1)	Nessus	SuSE Local Security Checks	medium
186289	Ubuntu 18.04 ESM / 20.04 LTS : Open vSwitch vulnerability (USN-6514-1)	Nessus	Ubuntu Local Security Checks	medium
186150	SUSE SLES15 Security Update : openvswitch (SUSE-SU-2023:4508-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2023-5366

medium

Tenable Plugins

critical

high

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium