SB2021011813 - Denial of service in Juniper Junos OS
Published: January 18, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2021-0207)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper interpretation conflict of certain data between certain software components within the Juniper Networks Junos OS devices. As a result, certain traffic is not passed through the device upon receipt from an ingress interface filtering certain specific types of traffic, which is then being redirected to an egress interface on a different VLAN. This causes a Denial of Service (DoS) to those clients sending these particular types of traffic.
Such traffic being sent by a client may
appear genuine, but is non-standard in nature and should be considered
as potentially malicious, and can be targeted to the device, or destined
through it for the issue to occur.
This issues affects IPv4 and IPv6 traffic.
Remediation
Install update from vendor's website.