SB2020082722 - Multiple vulnerabilities in Cisco NX-OS Software 

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Main Vulnerability Database SB2020082722

SB2020082722 - Multiple vulnerabilities in Cisco NX-OS Software

Published: August 27, 2020 Updated: August 27, 2020

Security Bulletin ID SB2020082722
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2020-3338)

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing inbound PIM6 packets. A remote attacker can send multiple specially crafted PIM6 packets, trigger resource exhaustion and perform a denial of service (DoS) attack.


2) Input validation error (CVE-ID: CVE-2020-3398)

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

The vulnerability exists in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation due to incorrect parsing of a specific type of BGP MVPN update message. A remote attacker can send this BGP MVPN update message and perform a denial of service (DoS) attack.


3) Input validation error (CVE-ID: CVE-2020-3397)

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

The vulnerability exists in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation due to incomplete input validation of a specific type of BGP MVPN update message. A remote attacker can send a specially crafted BGP MVPN update message and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References