SB2024030759 - Fedora 40 update for openvswitch

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Main Vulnerability Database SB2024030759

SB2024030759 - Fedora 40 update for openvswitch

Published: March 7, 2024

Security Bulletin ID SB2024030759
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2023-3966)

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

The vulnerability exists due to a boundary condition when handling Geneve packets. A remote attacker can send specially crafted Geneve packets with HF offload to the system, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.


2) Insufficient verification of data authenticity (CVE-ID: CVE-2023-5366)

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to missing verification of data authenticity when handling ICMPv6 Neighbor Advertisement packets between virtual machines. A local user can bypass OpenFlow rules and send otherwise restricted packets.


Remediation

Install update from vendor's website.

References