CVE-2023-3966

Openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Se encontró una falla en Open vSwitch donde varias versiones son vulnerables a paquetes Geneve manipulados, lo que puede resultar en una denegación de servicio y accesos a memoria no válidos. Para desencadenar este problema es necesario que la descarga de hardware a través de la ruta de enlace de red esté habilitada.

Timothy Redaelli and Haresh Khandelwal discovered that Open vSwitch incorrectly handled certain crafted Geneve packets when hardware offloading via the netlink path is enabled. A remote attacker could possibly use this issue to cause Open vSwitch to crash, leading to a denial of service. It was discovered that Open vSwitch incorrectly handled certain ICMPv6 Neighbor Advertisement packets. A remote attacker could possibly use this issue to redirect traffic to arbitrary IP addresses.

*Credits: This issue was discovered by Haresh Khandelwal (Red Hat) and Timothy Redaelli (Red Hat).

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-07-26 CVE Reserved
2024-02-22 CVE Published
2025-02-13 CVE Updated
2025-04-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-248: Uncaught Exception

CAPEC

References (4)

URL	Tag	Source
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2023-3966	2024-03-07
https://bugzilla.redhat.com/show_bug.cgi?id=2178363	2024-03-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Openshift Search vendor "Redhat" for product "Openshift"				*		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				*		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				*		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				*		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				*		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				*		-		Affected
Suse Search vendor "Suse"		Packagehub Search vendor "Suse" for product "Packagehub"				*		-		Affected
Suse Search vendor "Suse"		Sle-module-legacy Search vendor "Suse" for product "Sle-module-legacy"				*		-		Affected
Suse Search vendor "Suse"		Sle-module-server-applications Search vendor "Suse" for product "Sle-module-server-applications"				*		-		Affected
Suse Search vendor "Suse"		Sle Hpc-espos Search vendor "Suse" for product "Sle Hpc-espos"				*		-		Affected
Suse Search vendor "Suse"		Sle Hpc-ltss Search vendor "Suse" for product "Sle Hpc-ltss"				*		-		Affected
Suse Search vendor "Suse"		Sle Hpc Search vendor "Suse" for product "Sle Hpc"				*		-		Affected
Suse Search vendor "Suse"		Sles-ltss Search vendor "Suse" for product "Sles-ltss"				*		-		Affected
Suse Search vendor "Suse"		Sles Search vendor "Suse" for product "Sles"				*		-		Affected
Suse Search vendor "Suse"		Sles Sap Search vendor "Suse" for product "Sles Sap"				*		-		Affected
Suse Search vendor "Suse"		Suse-manager-proxy Search vendor "Suse" for product "Suse-manager-proxy"				*		-		Affected
Suse Search vendor "Suse"		Suse-manager-server Search vendor "Suse" for product "Suse-manager-server"				*		-		Affected