Rapid7 Vulnerability & Exploit Database

Juniper Junos OS: 2021-10 Security Bulletin: Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet (JSA11213) (CVE-2021-0299)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Juniper Junos OS: 2021-10 Security Bulletin: Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet (JSA11213) (CVE-2021-0299)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
10/14/2021
Created
10/15/2021
Added
10/14/2021
Modified
03/21/2022

Description

An Improper Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks Junos OS results in a kernel crash, causing the device to restart, leading to a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems with IPv6 configured. Devices with only IPv4 configured are not vulnerable to this issue. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1.

Solution(s)

  • juniper-junos-os-upgrade-latest

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;